I have a Furuno FCV 600L on an 02 210 with a 135 Opti. At about 4-5 mph in deep water the screen fills almost entirely with clutter. Once I drop the speed it clears up. If I get into shallow water (below 75 feet or so) it will run at 20+mph and is clear as a bell. Furuno says they believe it is prop cavitation. They say in shallow water, the stronger returns are clearing the clutter up. I have the transducer mounted on the starboard chine nearest the keel (right where the picture here show and my dealer recommends) and the transducer is in plenty of water. I would love to do a thru-hull and be rid of the problem, but it looks like that is not an option. I have a good P66 transducer. Is there an alternate location anyone has had success with?
Thanks
Thanks