If it's too long, coil it. Cutting the cable will interfere with the accuracy of the fishfinder's signal. Immediately after haulout, clean the bottom surface of the transducer to remove slime and barnacles. If necessary, sand lightly with 240-grit sandpaper. Never paint a transducer with bottom paint.
Special paints inhibit marine growth without interfering with the signal.
See page 297 for transducer bottom paint. All Rights Reserved.