Mounting a fish finder on an inflatable kayak might sound tricky at first—after all, you don’t have rigid decks or built-in mounting rails—but with the right approach, it’s actually simple, secure, and highly effective. Whether you’re fishing on a calm lake or exploring coastal waters, a properly installed fish finder can dramatically improve your success on the water.

Here’s a complete guide to help you do it right.

Why Use a Fish Finder on an Inflatable Kayak?

A fish finder uses sonar to detect fish, underwater structures, and depth. On an inflatable kayak, it helps you:

  • Locate fish faster
  • Understand bottom contours
  • Avoid shallow hazards
  • Improve overall fishing efficiency

Despite the flexible structure of inflatable kayaks, modern mounting solutions make installation reliable and portable.

Key Components You’ll Need

Before starting, gather the essential parts:

  • Fish finder display unit
  • Transducer (sonar sensor)
  • Battery (usually 12V lithium or sealed lead-acid)
  • Mounting system (rail mount, glue-on mount, or DIY platform)
  • Waterproof battery box or dry bag

Mounting Options for Inflatable Kayaks

1. Glue-On Mount Pads (Most Popular)

Many inflatable kayaks support adhesive mounting pads. These are glued directly onto the kayak’s PVC surface.

Advantages:

  • Strong and stable
  • Permanent solution
  • Compatible with accessories like rod holders and fish finder mounts

Tips:

  • Clean the surface thoroughly before gluing
  • Use marine-grade adhesive
  • Allow proper curing time (usually 24–48 hours)

2. Rail Mount Systems

Some higher-end inflatable kayaks come with accessory rails or allow you to install them.

Advantages:

  • Adjustable positioning
  • No glue required if pre-installed
  • Easy to remove or reposition

You can attach a fish finder mount directly to the rail using compatible brackets.

3. Portable Mount Platforms (Best for Flexibility)

If you don’t want to modify your kayak, consider a portable mounting board or crate system.

Examples:

  • Milk crate with mounted electronics
  • Custom-cut plastic board spanning across the kayak
  • Gear tracks attached to a rigid panel

Advantages:

  • No permanent modification
  • Easy to transfer between kayaks
  • Great for beginners

How to Mount the Transducer

The transducer is the most critical part of the system. It must stay in contact with water for accurate readings.

Common Methods:

1. Over-the-Side Arm Mount

  • Attaches to your kayak and holds the transducer in the water
  • Adjustable and easy to install

2. Glue-On Transducer Mount

  • Similar to display mounts, but positioned near the stern or side

3. Inside-Hull Mount (Special Case)

  • Works only if the kayak material allows sonar to pass through (less common for inflatables)

Important Tip:
Ensure the transducer sits below the waterline and remains stable while paddling.

Battery Setup and Storage

Fish finders require a power source, typically a 12V battery.

Best Practices:

  • Use a waterproof box or dry bag
  • Secure the battery to prevent movement
  • Choose lightweight lithium batteries for better portability
  • Keep wiring neat and protected

Cable Management

Loose wires can interfere with paddling and become a safety hazard.

  • Use clips or zip ties to secure cables
  • Route wires along the kayak’s sides
  • Avoid areas where your paddle or feet will contact

Positioning the Fish Finder Display

Place the screen where it’s easy to see but doesn’t interfere with paddling.

Ideal locations:

  • In front of your seat
  • Slightly off to your dominant side

Make sure:

  • The screen is visible in sunlight
  • Buttons are easy to access
  • It doesn’t block your leg movement

Safety Considerations

  • Always test your setup in shallow water first
  • Ensure mounts are firmly secured
  • Avoid overloading one side of the kayak
  • Keep electronics waterproofed

Installing a fish finder on an inflatable kayak is a game-changer for anglers. With options like glue-on mounts, rail systems, and portable platforms, you can customize your setup based on your needs and skill level.

Start simple, focus on stability and safety, and refine your setup over time. Once everything is dialed in, you’ll spend less time searching—and more time catching.

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