I just purchased a Hurricane Sundeck 217 with a 200 HPDI Yamaha. It has a Teleflex depth/fish finder unit with the transducer glued to the hull near the bilge pump. The display is sensitive to the trim angle of the engine at cruising speed. It will only display properly if the trim is fairly high. If not, the display reads 0 feet. Similar to the display if you get into less than 2 feet of water. Also, if the engine is in reverse the diplay will read 300 or feet or more. Will moving the transducer to a different location help? Thanks, Bert. 