I have an aluminum boat that has several leaky rivets and a couple of cracks that need patched. It has had these cracks since I bought the boat but they had been patched and held fairly well for a few years. The leaks are not major but they require me to run the bilge at least a couple of times on an evening trip. What I would like to know is what the best material that everyone has used to repair these types of leaks? I had some Marine-Tex that had set for years and the catalyst (separate container) had leaked and dried up and thus the stuff does not seem to want to set up. I want to buy something good and give the bottom a good looking over and then paint it this fall. So let's hear what has worked for you and also what did not work. Thanks in advance.