Review on iCOVER Jon Boat Cover: Trailerable & Water-Proof, Fits 12-18ft Long Boats, Up to 75in Beam Width by David Bar

This boat cover works fairly well but needs a pole or something in the middle to keep water from pooling. The straps hold the case in place well, but don't provide enough tension to keep the top of the case taut, allowing water to pool in puddles. Where water collects, it seeps through the cover and drips into the boat. I don't think this coating will last long if you leave water on it in a puddle. Every time it rains I go out and shake the water off the top. seems to be working fine so far. but if you want to call it waterproof, the water should really pool and slide right off. Water will definitely saturate this coating and get into your boat if left standing.