I've always used Pettit Trinidad on the sailboat. One year tried Micron and had much more slime buildup. Trinidad cannot be stored out of the water, so on the trawler I tried Pettit Hydrocoat Eco, which can be stored dry indefinitely. There was no slime or growth in the brief time I had it in the water. I will say that the Hydrocoat is a joy to use without reservation compared to Trinidad or Micron. It doesn't stink, can be cleaned up with water (though you have to be quick - after a short time it dries enough that solvent is necessary). It rolls on smoother than any other bottom paint I've ever used. And perhaps best of all, the re-coat instructions say "power wash and apply" - no sanding. Having sanded the Trinidad from the bottom of the sailboat 3 times, and Micron once, I can tell you it is not something I look forward to.