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Posts: 117
| If it’s an aluminum boat you will likely need to play with the exact position of the transducer. I had a humminbird transducer on my lund, it definitely took some time playing with the micro-adjustment to get the best readings. At higher speeds you will get a lot of feedback, and at some point you will lose the “picture” of the bottom but keep the numerical readout, then at some point you will lose even the numerical readout. My lund lost the picture in the low 30’s mph and kept the numerical readout up to about 40-ish, sometimes more if the water was exactly right. This was two different sonars, so I assume they are all at least similar. FYI, I have been told that people who use the flip-up Transducer Shield and Saver brand of stern mount can get readings at higher speeds because it has a plate that smooths the water coming to it or something like that—they make a great product so I don’t doubt that’s true—worth a call to them.
It’s true that whatever you are seeing is behind the boat and less useful, but it still allows you to easily see a rising/falling bottom and depth (without having to focus on a number) so I find it helpful to visually correlate against what I’m seeing on the chart. For this reason I think it’s worth spending the time to get it right.
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