In my own personal observations, it's going to be hard to beat Woolsey Neptune, (votes not yet in for Neptune II) My last application has gone 4 years, in SC, with nothing but minor fouling A friend did an exceptional job, 12 mils of Copperpoxy, and the next time he passes through, we will update his results. A friend gave me some Trinidad SR to use on my RIB. It has stuck well on both fibergas and Hypalon tubes. One year and counting - two coats. John DeLotto