I watched my dad and a fishing buddy of his struggle for over an hour to keep their Jon boat from sinking from the weight of their trout line haul of channel catfish, in a fast moving river. 2 men in a 10 ft flat bottom aluminum boat a 10 hp outboard water moving around 10 MPH 20 ft deep with 2 to 3 inches of free board trying to travel up stream less than 1/4 mile. Actually I was hearing them more than seeing them as the only thing I could see was the light from their Coleman lantern on the bow