I have a new Lowrance HDS 7 with a transom mount transducer. I cant seem to get this thing to operate properly. Actually Im about done with this thing. I moved the transducer to different locations and also made it deeper below the bottom of the boat. I dont know what else to do. The thing seems to work ok at very slow speeds, but as soon as your speed increases it will loose bottom and just doesnt work at all. I dont know what else to do. Has anyone had any of the same problems or does somebody have any suggestions.