Well first off you really need to figure out the charting function now. How could you spend 3 years looking at that fish finder and not at least try the charting function?
Try this: Press pages, scroll to chart press enter. There should be an option that will give you a split screen, chart on left, fish finder on right.
Using the chart to find fish and or structure, and then being able to find them again is absolutely critical. Using the chart, you will be able to see where the structure that you marked is and how your kayak relates to it. It will also, using the tracking feature show you, in which direction you are traveling and or drifting. Also where you caught fish before again, CRITICAL. So learn how to use your charting function, and it will open up a whole new world to you, as far as far as usefulness of your fish finder and your effectiveness with it.
Another thing you might want to try is, switching to the lower frequency on your unit, most likely your using high chirp. Try switching over to medium chirp. What this setting does is, it widens your view of what's underneath you, but it also reduces the resolution. The advantage is that you will be able to see further out in front, to the back and the sides of you. What that translates into is, you will be able to see fish and or bait fish sooner or you will be able to see things you would have missed if not on medium chirp. This is very helpful, especially when your trying to track your gear down to the bottom, or your trying to drop your gear to the level of a marked fish. Now if you can't see your gear on your fish finder then you need to adjust the sensitivity higher so you are able to see it without cluttering up the screen. Another thing to note is that fish and objects will appear to look bigger on the lower frequency so you need to take mental note of that. Also the appearance will change with varying depth. Example: In shallow water a mark might appear to be gigantic, the same size fish and mark in deeper water might look average.
So try that!
