Humminbird transducer location

[TinmanDon]

Well it's getting closer...got the transducer all tweeked up as per Humminbird's installation instructions but still need to do more. At WOT (35mph) I can get my bottom depth reading but I still lose the bottom on the sonar. As soon as I start to get the boat on plane, the whole screen fills up with colored pixels, I can sometimes see the bottom but there's no way I'd see fish or structure. I might try to raise the transducer a touch....any ideas guys???