Hey guys ,I got one for ya. Im using a Hummingbird 200DX depthfinder located on the console of my boat. Using a shoot through the hull transducer. This setup has worked fine for 2 yrs, it worked fine the last time I used my boat last fall. Now all the sudden when my engine is running my depthfinder cant locate the bottom. This happens even when Im in neutral. Ive checked all my connections, No corosion, no loose connections. If im fishing just using my trolling motor it works perfect. I aint gotta clue. Any ideas???