How to Mount a Fish Finder on a Jon Boat: Guide

Fishing enthusiasts know the value of a good fish finder, especially when it comes to enhancing the fishing experience by locating fish more efficiently. Mounting a fish finder on a Jon boat—a flat-bottomed boat commonly used for fishing in calm waters—can transform your fishing trips. In this comprehensive guide, we’ll explore everything you need to know about mounting a fish finder on a Jon boat, from choosing the right equipment to installation and maintenance tips.

Why Use a Fish Finder on a Jon Boat?

Benefits of a Fish Finder

  1. Enhanced Fish Detection: Modern fish finders use sonar technology to detect fish underwater, helping you locate fish more effectively.
  2. Water Depth Measurement: They provide accurate water depth readings, ensuring you avoid shallow areas that could damage your boat.
  3. Underwater Structure Identification: Fish finders help you identify underwater structures where fish might be hiding.
  4. Water Temperature: Knowing the water temperature can help you determine the type of fish in the area.

Advantages for Jon Boats

  • Stability and Space: Jon boats offer a stable platform and ample space for mounting and using fish finders.
  • Versatility: Suitable for various water bodies, Jon boats can benefit greatly from the navigational and fishing advantages provided by a fish finder.

Choosing the Right Fish Finder

Key Features to Consider

  1. Display Size and Resolution: Larger, high-resolution displays offer better visibility, especially in bright sunlight.
  2. Frequency: Dual-frequency fish finders (e.g., 50/200 kHz) provide better detail and depth capabilities.
  3. Power: Higher power (measured in watts) allows for better depth penetration and clearer images.
  4. GPS Integration: Some fish finders come with built-in GPS for navigation and marking fishing spots.
  5. Transducer Type: Choose between transom-mounted, in-hull, or thru-hull transducers based on your boat and fishing needs.

Popular Brands and Models

  • Garmin Striker Series: Known for their reliable performance and built-in GPS.
  • Humminbird HELIX Series: Offers advanced imaging and a range of features.
  • Lowrance HOOK Series: Combines affordability with high-quality sonar capabilities.

Preparing for Installation

Tools and Materials Needed

  • Fish finder unit
  • Transducer
  • Mounting bracket
  • Power drill and drill bits
  • Screwdriver
  • Marine-grade sealant
  • Zip ties or cable clamps
  • Measuring tape
  • Marker or pencil

Selecting the Mounting Location

  • Display Unit: Mount the display unit where it is easily visible and accessible from your fishing position. Typically, this is near the helm or on the console.
  • Transducer: Place the transducer on the transom, ensuring it is submerged and clear of any obstructions that could interfere with sonar signals.

Step-by-Step Installation Guide

Installing the Display Unit

1. Mounting the Bracket:

  • Choose a location near the helm or where you typically sit while fishing.
  • Mark the screw holes using the mounting bracket as a template.
  • Drill pilot holes for the screws.
  • Attach the bracket using the screws and a screwdriver.

2. Attaching the Display:

  • Place the fish finder display onto the mounting bracket.
  • Secure it according to the manufacturer’s instructions.

Installing the Transducer

Positioning the Transducer:

  • Choose a spot on the transom where the transducer will be submerged in water at all times.
  • Ensure it is away from the propeller to avoid turbulence.

Mounting the Transducer:

  • Use the transducer bracket as a template to mark the screw holes.
  • Drill pilot holes and apply marine-grade sealant to prevent water intrusion.
  • Attach the transducer bracket to the transom with screws.
  • Adjust the transducer angle to ensure it points straight down when the boat is in the water.

Routing the Cable:

  • Run the transducer cable along the transom and up to the fish finder display.
  • Secure the cable using zip ties or cable clamps to keep it tidy and prevent damage.

Powering the Fish Finder

Connecting to a Power Source:

  • Locate the boat’s battery or power panel.
  • Connect the fish finder’s power cable to the battery, ensuring correct polarity (red to positive, black to negative).

Fuse Protection:

  • Install an in-line fuse holder to protect the fish finder from electrical surges.
  • Use a fuse size recommended by the fish finder manufacturer.

Testing and Calibration

Initial Power-Up

  • Turn on the fish finder to ensure it powers up correctly.
  • Follow the on-screen instructions to complete the initial setup.

Calibration

  • Depth Calibration: Ensure the depth readings are accurate by comparing them with a known depth.
  • Sonar Sensitivity: Adjust the sensitivity settings to filter out noise and get a clear image.
  • GPS and Mapping: If your fish finder has GPS, verify that it is functioning properly and calibrate the maps if necessary.

Maintenance Tips

Regular Cleaning

  • Clean the transducer regularly to remove any algae or debris.
  • Wipe down the display unit with a damp cloth to remove dirt and fingerprints.

Software Updates

  • Check for firmware updates from the manufacturer to keep your fish finder running smoothly and with the latest features.

Storage

  • When not in use, cover the fish finder display to protect it from sun and weather damage.
  • If storing the boat for an extended period, remove the fish finder and store it in a safe, dry place.

Troubleshooting Common Issues

Poor Sonar Readings

  • Transducer Position: Ensure the transducer is properly aligned and submerged.
  • Water Conditions: Rough water can interfere with readings; try again in calmer conditions.
  • Interference: Check for other electronic devices that might be causing interference.

Power Issues

  • Connections: Verify all power connections are secure and free of corrosion.
  • Battery: Ensure the battery is fully charged and in good condition.
  • Fuse: Check the in-line fuse and replace it if it’s blown.

Conclusion

Mounting a fish finder on your Jon boat can significantly enhance your fishing experience by providing valuable information about water depth, underwater structures, and fish locations. By following this comprehensive guide, you’ll be well-equipped to choose the right fish finder, install it correctly, and maintain it for years of successful fishing trips. With the right setup, you’ll spend less time searching for fish and more time catching them. Happy fishing!

Happy Boating!

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Read A Guide to Mounting Radar on Boat: Seeing Through the Fog until we meet in the next article. 

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