Long live the Duranautic. I have a 1980 Duranatic Offshore 14' and I am fixing it up for my grandson. Everything has been going fine but I did a leak test (filled boat with water, etc.) and I have some leaks. The problem I encountered is difficult to resolve. The rivets in my boat go through the hull "and" through the sides of the long structural channel supports on the underside of the hull that go the length of the boat. If the water leaks out through a rivet in the floor and doesnt leak out of the bottom of the rivet hole in the channel, it can run the full lenght of the channel support. I think the only way to identify the leaks is to put the boat is the water and see where it comes up through the floor. Any ideas?