Top-3 Mistakes When Buying a Fish Finder and How to Avoid Them | Bass Fishing

Three Common Mistakes When Buying a Fish Finder and How to Avoid Them
We receive many questions and concerns from people purchasing fish finders, so much so that I decided to write this article about the three most common mistakes people make and how to avoid them.

Mistake #1: Buying a Fish Finder That Doesn’t Suit Your Needs

With numerous options available, it’s easy to purchase a unit that may not be the best fit. There are different types of sonar technology to consider:

• Forward-facing sonar: Requires a separate transducer mounted on the trolling motor, providing real-time imaging of what’s ahead of the boat. This technology allows anglers to gauge fish reactions and adjust lure presentations accordingly.
• 2D Sonar & Down Imaging: Both display what is beneath the boat. Traditional 2D sonar provides a simple two-dimensional view, while down imaging offers more detail and clarity, making it easier to identify underwater structures.
• Side Imaging: Scans and displays what is on either side of the boat, making it possible to locate submerged structures and fish without having to pass directly over them.

Pros and Cons of Having All Features

While having forward-facing sonar, side imaging, and down imaging provides incredible clarity and accuracy, it can be extremely expensive. High-end units often require additional transducers, network devices, and multiple screens, which can push costs beyond $30,000.
To save money, consider eliminating forward-facing sonar and focusing on side imaging, which is effective for scanning large areas. However, side imaging is typically reliable up to 75 feet on either side of the boat; beyond this, accuracy declines.

Mistake #2: Choosing a Fish Finder Based Only on Price

While budget constraints are important, purchasing a fish finder solely based on price can lead to limitations. Some budget-friendly units only offer 2D sonar and GPS without additional imaging capabilities. While these are still a major upgrade compared to models from a decade ago, they may not be suitable for anglers looking for detailed underwater imaging.

Ways to Save Money

1. Opt for All-in-One Units: Some modern fish finders integrate 2D sonar, down imaging, and even side imaging, eliminating the need for multiple transducers.
2. Reduce Screen Size: Choosing a 9-inch or 10-inch screen instead of a 12-inch screen can significantly cut costs without sacrificing essential features.
3. Purchase Previous Year’s Models: Manufacturers frequently release new models, causing older versions to be discounted.

Buying a lower-end unit may initially save money, but it could require a full replacement if an upgrade is needed later. Carefully consider whether a unit allows for future expansions before making a purchase.

Mistake #3: Skipping Mapping Software or Lake Charts

Many fish finders include basic GPS and maps, but these are often rudimentary and lack the detail needed to locate prime fishing spots. Investing in high-quality mapping software or lake charts can provide a competitive edge.

Why Mapping Software is Worth It:

• Displays detailed contour lines, submerged structures, and drop-offs.
• Helps identify underwater ridges, ledges, and other fish-holding areas.
• Can highlight sunken ships, underwater brush piles, and other important features.

A $150 mapping card is a worthwhile investment. Updates are available, but upgrading every 3-4 years rather than annually can help save money while maintaining accurate information.