Thanks Richard!
I have used it on gel coat and had great results. As far as longevity, I can't say as I haven't seen that boat since I did it.
On cars and trucks I'm getting better than 3 months for DD's outside 24/7
The product is stupid easy to use and the results are phenomenal!
Good luck!
BTW, I mix at 1:3 and apply to a very wet surface. Spray very fine mist and you don't have to cover every square inch, the product spreads as you rinse. I rinse immediately with hose pressure, works better than a pressure washer
Any questions feel free to pm me