[THEFERMANATOR]

Won't work with side scan, only down view. The problem with any inside the hull mounting is anything other than down view will shoot out the side of the transducer, epoxy, or oil canister. When you epoxy inside the hull, you lose some resolution as the sonar has to know also ping through the fiberglass, and if theres an air locket or imperfection in the hull between the transducer and the water, you just wasted alot of time for nothing as sonar stops working in air. As to oil, it's similiar. You lose some clarity as the sonar now double pings essentially. The transducer sends out the ping which hits the oil and the oil now retransmits the ping back out through the hull. The oil method works great for strictly depth sounders, but not so great when you need high resolution imo. A transducer mounted to the stern is still a better option and only 2nd to true through hulls where it mounts through the hull bottom leaving the transducer in clean water and cannot be kicked up or move around.