nthcbr954

Was just wondering if anybody had any suggestions of what may be wrong with my fish finder I'm running a Raymarine c-80. it's an older unit. In May while striper fishing on the Hudson it marked a lot of fish and bait. but the river doesn't get deeper than 40 feet. Just left from an 8 Day fishing trip on Ontario and we never marked a single fish the fish finder marked bottom good. Does anybody have any suggestions on what may be wrong it's running an airmar thru Hull transducer. One that shoots through the hull. Here are some screenshots from the river.. Sent from my SM-G860P using Lake Ontario United mobile app