International Micron 350 -- Experiences?

[sailcrazy]

We used M66 for a few years here in the Caribb, and then switched to M99. It has worked very well for us here, and I'm expecting to reapply it this hurricane season after we have the bottom blasted and redone. I typically get 2 years out of it, with very light sanding in the off year (we haul out and store on land during the 4-6 month hurricane season). After 2 years (minimal slime, almost no barnicle growth), I'll give it a "good" sanding, then reapply 2 coats and I'm good for another 2-3 years. FWIW