I have a 1990 Cajun 178 Pro Sport bass boat. My GT56 Transducer is mounted in the location where a previous Lowrance transducer was mounted. This boat doesn't have a flat transom, there is some sort of cutout behind the motor. I think this is affecting my transducer because I can't get any reading at speed. On my previous boat, this same transducer could read bottom even on plane. Where would be the best spot to mount it? I'd really need to read bottom when at speed for at minimum water depth and updating user charts. I've attached pictures of my transom. Thank you!
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