How to remount Lowrance Transducer

[jsylvester08]

Happy February to those on the east coast. We are 1 month closer to boating season. I had a Lowrance Elite 7 installed and it’s been great. My problem is that if I get above a trolling speed it turns to a wash and doesn’t read any depth. Is this pretty common problem or was this just mounted wrong. I had it installed by a professional the first year and had the problem. Last year I tried to remount the transducer slightly lower on the hill but I get the same issue. Does anyone have any ideas or know a specific location I can mount it to read underway. I have an 86’ 20SF.