Mount Your Fish Finder to a Kayak: A Step-by-Step Guide

Last Updated on August 1, 2026 by Jaxon Mike

Mounting your fish finder to a kayak is a straightforward process. You can securely attach it using various mounting options like RAM mounts or adhesive mounts. This ensures your fish finder stays put even in rough conditions.

Getting your fish finder set up correctly means you can focus on finding the fish and enjoying your time on the water. Many kayakers worry about drilling holes, but there are clever ways to mount your unit without permanent damage.

• Choose the right mount type for your kayak.
• Consider transducer placement carefully.
• Secure all connections to prevent loss.
• Test your setup before hitting the water.

Let’s walk through exactly how to mount your fish finder step by step, so you’re ready for your next outing.

Installing Your Fish Finder on a Kayak

Mounting your fish finder securely is key to a great day on the water. You want it where you can easily see it without it getting in the way. Let’s get your fish finder ready for action!

Choosing the Right Mount for Your Kayak

The type of mount you choose depends on your kayak and your personal preference. Some options require drilling, while others are completely non-invasive. Understanding these choices helps you pick the best fit.

Permanent vs. Non-Permanent Mounts

Permanent mounts offer the most robust attachment. They are often bolted directly to your kayak. Non-permanent mounts use adhesive or clamp systems. They are great if you don’t want to drill holes. Researching your kayak’s material is helpful. Some materials are easier to drill into than others. We found that most kayakers prefer non-permanent options to preserve their kayak’s integrity.

Popular Mounting Systems

RAM Mounts are incredibly popular among kayak anglers. They use a ball-and-socket system. This allows for easy adjustment of your fish finder’s position. They offer various base options, including those that use existing kayak hardware. Adhesive mounts are another simple choice. They stick directly to your kayak’s surface. Make sure you clean the surface thoroughly first. Some anglers also use track systems. These allow you to slide mounts into place. They are very versatile.

Mount Type	Pros	Cons
RAM Mounts	Highly adjustable, very secure, many base options	Can be more expensive, some bases require drilling
Adhesive Mounts	Easy to install, no drilling required, affordable	Surface preparation is critical, may not hold in extreme conditions
Track Systems	Versatile, easy to reposition, no drilling needed for track itself	Requires a compatible kayak track, additional cost for mounts

Considering Your Kayak’s Layout

Where will you place the fish finder? You need a clear line of sight. It should also be within easy reach of your paddling hand. Avoid placing it where it will interfere with your rod or fishing line. Think about how you paddle. Where do your hands naturally rest? That’s often a good spot to consider for controls. Many kayaks have pre-molded areas perfect for mounting. Explore your kayak’s deck carefully. You might find an ideal spot you hadn’t considered.

Mounting the Fish Finder Unit

Once you have your mount, attaching the fish finder itself is the next step. This usually involves a mounting bracket that comes with your fish finder.

Attaching the Bracket to Your Mount

Most fish finder brackets attach to the mounting arm. This is typically done with screws. You’ll use the hardware that came with both your fish finder and your mount. Ensure the screws are snug but don’t overtighten. You don’t want to strip the threads. Many mounts allow for tilt and swivel. You can adjust this later. The goal now is a secure connection.

Positioning for Optimal Viewing

Now, attach the fish finder to the mount on your kayak. Where should it go? Think about the sun. Can you see the screen on a bright day? You might need to angle it away from direct glare. Consider your seating position. Can you see it without craning your neck? Many anglers find the front of the cockpit or just beside their seat works well. It needs to be stable. You don’t want it bouncing around as you paddle.

The All-Important Transducer Placement

The transducer is the “eye” of your fish finder. Its placement is critical for accurate readings. A poorly placed transducer can give you bad data. This is one area where careful thought pays off.

Through-Hull vs. Transom-Mounted

For kayaks, through-hull and transom-mounted transducers are less common. Most kayak anglers opt for external, shoot-through-hull, or trolling motor mounts. A shoot-through-hull transducer is mounted inside your kayak. The sonar signal passes through the hull material. This protects the transducer from damage. It works best with fiberglass or polyethylene hulls. Avoid mounting it over a foam core or air pockets. These can interfere with the signal. Transom mounts are for boats with a flat stern. They’re not ideal for most kayaks.

Adhesive Transducer Mounts (Inside the Hull)

One of the easiest methods for kayaks is an internal adhesive mount. You find a flat spot inside your hull. Clean it thoroughly. Then, use a strong, waterproof adhesive like marine epoxy or a specific transducer mounting kit. You then place the transducer in the adhesive. Let it cure completely. This method protects the transducer from the elements. We found that ensuring full contact between the transducer and hull is vital for signal strength. Check your fish finder’s manual for specific recommendations. Some manufacturers suggest a shallow reservoir of water or gel between the transducer and hull.

External Transducer Mounts

External mounts attach to the outside of your kayak. They often clamp onto a scupper hole or a dedicated mounting plate. This allows for easy adjustment and removal. You can position them to have a clear view of the water below. Make sure the transducer is submerged properly. It needs to be in the water to send and receive signals. We found that keeping the transducer clean is also important. Barnacles or debris can affect performance.

Wiring and Power Connections

You’ve got the units mounted. Now, let’s connect them. This is where you power up your fish finder.

Connecting the Transducer Cable

The transducer cable usually plugs into the back of your fish finder unit. Route the cable neatly. Use zip ties or cable clips to secure it along the mount or kayak hull. Avoid sharp bends or kinks. These can damage the internal wires over time. Ensure the cable isn’t hanging loose where it could snag on something.

Powering Your Fish Finder

Your fish finder needs power. This typically comes from a small, sealed battery pack or directly from your kayak’s electrical system. If using a battery, find a secure spot to store it. A dry hatch is ideal. Ensure the battery leads are connected correctly. For a direct connection, you’ll wire into a fuse block or use a dedicated power outlet. Always use appropriate gauge wiring and fuses. This prevents electrical shorts. Many experts recommend using waterproof connectors for any outdoor electrical connections (National Electrical Code).

Final Checks and Testing

Before you launch, give everything a once-over. A quick check can save you a lot of frustration.

Secure All Connections

Wiggle everything. Does it feel solid? Are all the nuts and bolts tight? Is the transducer cable secure? Is the power connection firm? You don’t want anything coming loose mid-paddle. A loose fish finder can be a lost fish finder. A lost transducer means no readings.

Test on the Water

Launch your kayak in calm water. Turn on your fish finder. Does it power up? Do you get depth readings? Does the sonar display look clear? Adjust the viewing angle so you can see it easily. If you’re getting strange readings, check your transducer placement and connections again. It’s much easier to fix issues at the dock than in the middle of a lake.

Here’s a quick checklist for your setup:

• Mount is securely attached to kayak.
• Fish finder unit is firmly connected to the mount.
• Transducer is positioned correctly and submerged.
• All cables (transducer, power) are routed neatly and secured.
• Power source is connected and functioning.
• Screen is visible and adjustable.

Conclusion

You’ve successfully learned how to mount your fish finder to your kayak, transforming your fishing trips. By choosing the right mount and carefully considering transducer placement, you ensure accurate readings. Proper wiring and final checks mean your gear will perform reliably. Now you can focus on the thrill of the catch, not on wobbly electronics. Get out there, enjoy your newly rigged kayak, and happy fishing!

Frequently Asked Questions

What’s the best way to mount a fish finder without drilling holes?

For a non-drilling approach, consider using a track system or adhesive mounts. Track systems attach to your kayak’s existing rails, offering flexibility. Adhesive mounts stick directly to the hull, but ensure the surface is clean and dry for a strong bond. RAM mounts also offer some bases that don’t require drilling.

How do I know if my kayak hull is suitable for an internal transducer mount?

Internal transducer mounts work best on kayaks made of fiberglass or polyethylene. These materials allow the sonar signal to pass through effectively. Avoid mounting over foam cores or air pockets, as these can interfere with readings. Always check your kayak’s manual or contact the manufacturer if you’re unsure about your hull material.

Can I use the same mount for different fish finder brands?

Generally, the mount is separate from the fish finder unit itself. Most fish finders come with a universal mounting bracket that screws onto the mount’s arm. As long as the screw pattern on your fish finder’s bracket matches the plate on your mount, you should be able to swap units. Always confirm compatibility before purchasing.

How can I prevent my fish finder screen from glinting in the sun?

To combat sun glare, position your fish finder at an angle that minimizes direct sunlight. Many mounts allow for tilt and swivel adjustments. You can also consider purchasing an aftermarket sunshade or screen protector specifically designed for fish finders. Experiment with different angles when you’re on the water.

What should I do if my fish finder isn’t giving accurate depth readings?

If you’re experiencing inaccurate depth readings, first check your transducer placement. Ensure it’s fully submerged and free of debris or barnacles. Verify that the transducer cable is securely plugged into the fish finder unit and routed neatly without kinks. If the problem persists, reconfirm that the transducer is compatible with your fish finder model.