What’s worse than a fish finder bouncing off the deck at full throttle? Nothing, really. You need a mount that grips your electronics like a stubborn friend, no matter the chop or spray. We’ve rounded up ten RAM mounts built to hold tight, from compact arms to heavy duty plates. Let’s break down the best options.
| VAZESWIN 1.5″ Ball Aluminum Alloy Fish Finder Mount with 9.1″ Long Arm |  | Best Reach | Maximum Weight Capacity: Not specified (multiple devices supported) | Arm Length: 9.1 inches | Material: 6061-T6 aluminum alloy, powder-coated steel arm | VIEW LATEST PRICE | Read Our Analysis |
| 1.5″ Ball Medium Arm Fish Finder Mount Universal Marine Bracket |  | Best Value | Maximum Weight Capacity: 15.5 lbs static, 4.5 lbs dynamic | Arm Length: 5.9 inches | Material: Thickened aluminum, powder-coated finish | VIEW LATEST PRICE | Read Our Analysis |
| Aluminum Swing Arm Fish Finder Mount for 5″-12″ Screens |  | Heavy-Duty Pick | Maximum Weight Capacity: 110 lbs static, 22 lbs dynamic | Arm Length: 6 inches | Material: Aluminum, powder-coated marine-grade aluminum | VIEW LATEST PRICE | Read Our Analysis |
| RAM MOUNTS Fish Finder and Marine Electronics Mount with Medium Arm |  | Most Popular | Maximum Weight Capacity: 6 lbs | Arm Length: 3 inches | Material: Marine-grade, powder-coated aluminum | VIEW LATEST PRICE | Read Our Analysis |
| Scotty Fish Finder Mounting Plate (Black Large) |  | Budget-Friendly Pick | Maximum Weight Capacity: Not specified (large fish finders) | Arm Length: Not specified (mount height 6.5 inches) | Material: Durable plastic | VIEW LATEST PRICE | Read Our Analysis |
| VAUBORTTI Aluminum Fish Finder Mount for Boats |  | Most Versatile | Maximum Weight Capacity: Not specified | Arm Length: Extended dual-rod arm (not specified) | Material: Marine-grade aluminum alloy, electrostatic powder coating | VIEW LATEST PRICE | Read Our Analysis |
| RAM MOUNTS Fish Finder and GPS Mount with Medium Arm Drill-Down Base |  | Professional Grade | Maximum Weight Capacity: 2 lbs | Arm Length: 4.66 inches | Material: Marine-grade, powder-coated aluminum | VIEW LATEST PRICE | Read Our Analysis |
| RAM MOUNTS Fish Finder and Marine Electronics Swing Arm Mount |  | Best Durability | Maximum Weight Capacity: Not specified | Arm Length: 6 inches | Material: Powder-coated steel and high-strength composite | VIEW LATEST PRICE | Read Our Analysis |
| RAM MOUNTS Fish Finder and Chartplotter Mount with Short Arm C Size Ball |  | Editor’s Choice | Maximum Weight Capacity: Not specified | Arm Length: Short arm (not specified) | Material: Marine-grade aluminum, powder-coated | VIEW LATEST PRICE | Read Our Analysis |
| RAM MOUNTS Universal Heavy-Duty Fish Finder Mount for Boats |  | Best Overall | Maximum Weight Capacity: 6 lbs | Arm Length: Short arm (not specified) | Material: Marine-grade aluminum, powder-coated | VIEW LATEST PRICE | Read Our Analysis |
More Details on Our Top Picks
VAZESWIN 1.5″ Ball Aluminum Alloy Fish Finder Mount with 9.1″ Long Arm
If you need a fish finder mount with unmatched arm length, the VAZESWIN delivers. Its 9.1-inch double socket arm gives you incredible positioning flexibility, while the 6061-T6 aluminum alloy build resists corrosion and shock. The package includes a 2.4-inch round base and a 6.25 x 2-inch mounting plate, both with III grade hard anodization.
You get 360° adjustable rotation thanks to the ball-and-socket design. It works with Garmin, Lowrance, Humminbird, and Raymarine devices. And it fits boats, kayaks, or pontoons. The water-resistant, powder-coated arm holds up in harsh conditions. Plus, you have a 1-year warranty for peace of mind.
- Maximum Weight Capacity:Not specified (multiple devices supported)
- Arm Length:9.1 inches
- Material:6061-T6 aluminum alloy, powder-coated steel arm
- Ball Size:1.5-inch (C size)
- Mounting Plate Dimensions:6.25 x 2 inches (rectangular)
- Warranty:1-year warranty
- Additional Feature:III grade hard anodization
- Additional Feature:9.1-inch long arm reach
- Additional Feature:Water-resistant construction
1.5″ Ball Medium Arm Fish Finder Mount Universal Marine Bracket
You’re looking for a fish finder mount that balances value and durability without cutting corners. The WINDFRD 1.5” Ball Medium Arm delivers exactly that. It arrives in a foam lined box, protecting its thickened aluminum construction and powder coated finish from day one.
This mount handles harsh saltwater with ease, passing extensive salt spray testing. It supports up to 15.5 lbs stationary, or 4.5 lbs while you’re bouncing across waves.
Key specs:
- 5.9” double socket arm for smooth, unlimited adjustment
- 6.23” x 2” universal plate, pre drilled for Garmin, Lowrance, Humminbird
- 2.4” round base fits boats, kayaks, or flat surfaces
- Marine grade stainless steel hardware resists corrosion
You’ll also find compatibility with RAM Mounts, Arkon, and iBolt systems. Polished edges give it a clean look, and a solid warranty backs your investment. For foolproof positioning without breaking the bank, this bracket stays put!
- Maximum Weight Capacity:15.5 lbs static, 4.5 lbs dynamic
- Arm Length:5.9 inches
- Material:Thickened aluminum, powder-coated finish
- Ball Size:1.5-inch (C size / 38 mm)
- Mounting Plate Dimensions:6.23 x 2 inches (universal)
- Warranty:Warranty (not specified)
- Additional Feature:15.5 lbs static capacity
- Additional Feature:Salt spray tested durability
- Additional Feature:Foam-lined protective box
Aluminum Swing Arm Fish Finder Mount for 5″-12″ Screens
The aluminum swing arm fish finder mount is your heavy-duty pick for serious anglers tackling rough waters. Its all aluminum construction, with marine grade powder coating and stainless steel hardware, laughs off salt spray. You’ll get a 6 inch swing arm with two pivot points for 360 degree rotation, perfect for your 5 to 12 inch screen. It supports up to 110 lbs static and 22 lbs dynamic weight, so it stays put through pounding waves. The pre drilled rectangle plate fits Garmin, Lowrance, Humminbird, and Raymarine. You get four screw sets and a 2 year warranty. Weighing just 2.3 pounds, it’s waterproof, ready for your kayak or dash.
- Maximum Weight Capacity:110 lbs static, 22 lbs dynamic
- Arm Length:6 inches
- Material:Aluminum, powder-coated marine-grade aluminum
- Ball Size:1.5-inch (C size compatible)
- Mounting Plate Dimensions:Rectangle plate (not specified)
- Warranty:2-year warranty
- Additional Feature:110 lbs static capacity
- Additional Feature:Horizontal swing arm design
- Additional Feature:Two pivot points
RAM MOUNTS Fish Finder and Marine Electronics Mount with Medium Arm
Among all the options here, the RAM Mounts Fish Finder and Marine Electronics Mount with Medium Arm is the most popular choice for serious anglers. You get marine-grade, powder-coated aluminum construction that won’t quit, plus RAM’s patented 5-ball and socket technology for near-infinite adjustability. It handles up to 6 pounds, works with Garmin Striker 5 and GPSMAP series units, and mounts flat with a drill-down base. The top plate measures 6.25 by 2.5 inches, arm length is 3 inches, and the whole thing weighs about 11.36 ounces. You might need to drill extra holes for certain fits, but that’s minor. And it comes with a lifetime warranty, backed by over 2,200 glowing reviews.
- Maximum Weight Capacity:6 lbs
- Arm Length:3 inches
- Material:Marine-grade, powder-coated aluminum
- Ball Size:1.5-inch (C size ball)
- Mounting Plate Dimensions:6.25 x 2.5 inches (top plate)
- Warranty:Lifetime warranty
- Additional Feature:Patented 5-ball socket technology
- Additional Feature:4-hole AMPS pattern
- Additional Feature:6-pound weight capacity
Scotty Fish Finder Mounting Plate (Black Large)
Scotty’s 0163 mounting plate is your budget-friendly pick for securing large fish finders without breaking the bank. It’s designed for 7 to 9 inch units, clamping onto a 1.5 inch ball system for rock-solid hold. You get full range of motion for smooth adjustments on your boat, car, or truck. The durable plastic enclosure keeps water out, and the overall size measures 8.27 x 11.02 x 2.52 inches.
- Key specs: 1.5 inch ball, 6.5 inch mount height, plate measures 2.25 x 2.25 inches.
- Customer love: Rated 4.6 stars from nearly 1,200 reviews.
- Warranty included so you’re covered if anything goes wrong.
Just mount it, lock your finder’s base, and you’re set for smooth sailing. It’s a simple solution that doesn’t skimp on stability.
- Maximum Weight Capacity:Not specified (large fish finders)
- Arm Length:Not specified (mount height 6.5 inches)
- Material:Durable plastic
- Ball Size:1.5-inch ball
- Mounting Plate Dimensions:2.25 x 2.25 inches
- Warranty:Warranty (not specified)
- Additional Feature:Enhanced clamping force
- Additional Feature:Fits 7-9 inch fish finders
- Additional Feature:Universal mounting system
VAUBORTTI Aluminum Fish Finder Mount for Boats
You want a fish finder mount that adapts to your setup, not the other way around. The VAUBORTTI Aluminum Fish Finder Mount delivers that flexibility through an oversized, wing-style knob you can adjust easily with wet hands or gloves. Its extended dual-rod arm gives you serious reach, while the injection-molded TPU ball keeps things stable in choppy water. Here’s what fits:
- Marine-grade aluminum with corrosion-resistant powder coating
- Rectangular AMPS hole pattern for Garmin, Lowrance, Raymarine, Humminbird (excludes Helix and Solix)
- T-bolt track base works on rails, kayaks, or flat surfaces
- Compatible with 1.5-inch arms from RAM Mounts, Arkon, iBolt
Comes with a 2-year warranty.
- Maximum Weight Capacity:Not specified
- Arm Length:Extended dual-rod arm (not specified)
- Material:Marine-grade aluminum alloy, electrostatic powder coating
- Ball Size:1.5-inch (C size)
- Mounting Plate Dimensions:Rectangular AMPS pattern (not specified)
- Warranty:2-year warranty
- Additional Feature:Oversized wing-style knob
- Additional Feature:T-bolt track base
- Additional Feature:High-temp die-cast construction
RAM MOUNTS Fish Finder and GPS Mount with Medium Arm Drill-Down Base
Let’s get straight to it: this mount is built for serious anglers who demand professional grade reliability. You’ll get a marine grade, powder coated aluminum construction that fights corrosion in harsh saltwater environments. The medium arm stretches 4.66 inches, and the drill down base attaches firmly to any flat surface.
It supports Garmin, Lowrance, Humminbird, and Raymarine units up to 2 pounds. And with RAM’s ball and socket technology, you achieve near infinite adjustability. The universal AMPS plate may need extra holes drilled; hardware isn’t included. But you’re covered by a lifetime warranty, so install it once and forget it!
- Maximum Weight Capacity:2 lbs
- Arm Length:4.66 inches
- Material:Marine-grade, powder-coated aluminum
- Ball Size:B size 1 ball
- Mounting Plate Dimensions:6.25 x 2 inches (AMPS plate)
- Warranty:Lifetime warranty
- Additional Feature:B size 1-inch ball system
- Additional Feature:2-pound maximum weight capacity
- Additional Feature:4.66-inch arm length
RAM MOUNTS Fish Finder and Marine Electronics Swing Arm Mount
This swing arm mount is built for lasting toughness. You get a powder-coated steel and high-strength composite design that laughs off moisture, so it’s perfect for your boat or vehicle. The 6-inch dual arm swings with two pivot points, giving you 360 degrees of rotation for perfect device placement. It fits Garmin, Humminbird, Lowrance, and Raymarine units, among others. Installation requires drilling, but the universal plate offers multiple hole options for secure attachment. Plus, it comes with a lifetime warranty. You cannot beat that reliability or flexibility.
- Maximum Weight Capacity:Not specified
- Arm Length:6 inches
- Material:Powder-coated steel and high-strength composite
- Ball Size:1.5-inch (C size compatible)
- Mounting Plate Dimensions:6.25 x 2 inches (universal)
- Warranty:Lifetime warranty
- Additional Feature:6-inch dual-arm swing system
- Additional Feature:Two pivot points
- Additional Feature:360-degree rotation
RAM MOUNTS Fish Finder and Chartplotter Mount with Short Arm C Size Ball
For anyone who needs a rock solid, no fuss mounting solution for their fish finder, the RAM MOUNTS Fish Finder and Chartplotter Mount with Short Arm, C Size Ball is our editor’s choice. You get a 1.5-inch ball system paired with a 6.25 x 2-inch plate, all built from marine-grade aluminum with a powder coated finish. It’s only 1.1 pounds, so you won’t struggle with installation. And the ball and socket tech gives you near infinite adjustability. You can mount it on any flat surface using the drill down design. It fits Garmin, Lowrance, Humminbird, and Raymarine units. Plus, you’re backed by a lifetime warranty and a 4.8 star rating from over 1,000 customers. That’s confidence you can feel.
- Maximum Weight Capacity:Not specified
- Arm Length:Short arm (not specified)
- Material:Marine-grade aluminum, powder-coated
- Ball Size:C size 1.5-inch ball
- Mounting Plate Dimensions:6.25 x 2 inches
- Warranty:Lifetime warranty
- Additional Feature:C size 1.5-inch ball system
- Additional Feature:5.225-inch overall height
- Additional Feature:1.1-pound lightweight design
RAM MOUNTS Universal Heavy-Duty Fish Finder Mount for Boats
You need a mount that won’t let your fishfinder bounce loose on rough water. This heavy-duty RAM Mount handles up to 6 pounds, so it’s solid for bigger units like Garmin GPSMAP or Lowrance HDS. Marine-grade aluminum with powder coating shrugs off salt spray, and the water-resistant build means it’ll outlast the season.
The ball and socket tech gives you near-infinite tilt, so you’ll dial in the perfect viewing angle. Short arm and drill-down base keep it low profile, but still adjustable. Assembly’s straightforward: bolt the plate down, snap your device in, go fish. Lifetime warranty backs it, too. Reviews sit at 4.7 stars from 168 owners. That’s confidence you can count on.
- Maximum Weight Capacity:6 lbs
- Arm Length:Short arm (not specified)
- Material:Marine-grade aluminum, powder-coated
- Ball Size:D size socket arm (not specified)
- Mounting Plate Dimensions:6.25 x 2 inches (round top plate)
- Warranty:Lifetime warranty
- Additional Feature:D size socket arm
- Additional Feature:6-pound maximum weight capacity
- Additional Feature:3.68-inch bottom plate
Factors to Consider When Choosing a Ram Mount for Fish Finder
When picking your RAM mount, you’ll need to match it to your fish finder’s weight and mounting plate pattern, or it simply won’t work. Pay close attention to ball size and arm length, as these determine your adjustability and range. And don’t overlook material and corrosion resistance, because that cheap mount will fail fast in saltwater.
Weight Capacity
The most important rule for picking a RAM mount? Never let your fish finder’s weight surpass the mount’s rated capacity. You’ll risk instability or outright damage. Most marine-grade RAM mounts handle devices up to 6 pounds, perfect for common fish finders. But if you’re running a larger screen or adding extra gear, consider a heavy-duty mount supporting up to 110 pounds. Always check the manufacturer’s specs for both static and dynamic weight limits. That ensures safe operation in rough marine conditions. Also, factor in how the weight distributes across your mounting surface. A heavy finder on a flimsy surface? Recipe for trouble. Stick to these guidelines, and your setup will stay solid. No wobbles, no worries. Just reliable performance every time you hit the water.
Mounting Plate Compatibility
Mounting plate compatibility: that’s where your fish finder setup either locks in or falls apart. First, check those pre-drilled holes match your device’s mounting points exactly, or you’re just guessing. Measure the plate’s dimensions and hole pattern against your unit’s requirements a mismatch means wobbles. And don’t skip weight limits: a plate rated for less can crack or slip your finder right off.
You’ll also need the right ball size. Most RAM mounts use a 1.5-inch C size, but confirm yours fits. The plate material matters for durability, but we’ll save corrosion details for later.
Here’s your quick checklist:
- Match hole pattern to your finder
- Confirm dimensions fit your device
- Support your finder’s weight
- Check ball size compatibility
Get these right, and you’ve got a solid foundation.
Material & Corrosion Resistance
And that solid foundation? It starts with materials that laugh in the face of salt spray. You’re buying a mount for a fish finder, so you need marine grade aluminum or stainless steel. These materials actively resist corrosion, not just delay it. Powder coated finishes add an extra protective layer, shielding against rust from constant water exposure. Look for components with III grade hard anodization. This surface treatment markedly boosts durability against harsh elements. Electrostatic powder coating or marine grade protective coatings prevent degradation from UV rays and salt spray. Don’t settle for less. Your mount needs to endure the marine environment, not surrender to it. Choose wisely, and your mount will stay put for years.
Ball Size & Arm Length
Two ball sizes—1.5 inches and 2.5 inches—dominate the RAM mount world for fish finders, and picking the right one matters more than you’d think. The bigger 2.5-inch ball handles heavier units with rock-solid stability, but you’ll need compatible arms and bases. The 1.5-inch version suits lighter finders and tight spaces, offering easier positioning. Arm length then decides your reach. Shorter arms keep things compact and straightforward, perfect for flush consoles. Longer arms give you extended range, letting you angle the screen toward your eyes without leaning forward. Match ball size to device weight first, then arm length to your mounting surface and viewing spot. Measure that console space before buying, or you’ll fight for clearance every trip. Get both right, and your finder sits exactly where you need it.
Adjustability & Range
Since adjustability determines whether your fish finder actually works for you on the water, that ball-and-socket joint is where it all comes together. You need near-infinite positioning, not just a few clicks. A good mount offers full 360-degree rotation, letting you tilt and swivel for the perfect view, no matter where you’re sitting or how the sun hits the screen.
Don’t forget the arm length. Longer arms give you more range to reach across a console, but they can sacrifice stability in rough chop. Shorter arms stay solid but limit your options. Whatever you choose, look for a secure locking mechanism. You don’t want your screen drooping when you hit a wake.
And the best part? You adjust it all without tools. Twist, lock, and go. That’s the kind of flexibility you need when conditions change fast.
Device Compatibility
Next, match the hole pattern. Your fish finder might use an AMPS, rectangular, or circular pattern. Make certain the mount’s plate aligns perfectly with those mounting points. If you’re using gimbal brackets, VESA patterns, or direct plate attachment, confirm compatibility there too.
And don’t forget adjustable ball and socket joints! They accommodate various device thicknesses and let you dial in your ideal viewing angle. Get this right, and your mount will hold steady through choppy water!
