My yard uses only the best (and most expensive) boat products and employs only certified workers. So, I had confidence in having them do my blister repair
in their indoor paint
shop during the winter of 2004/2005.
After using Peel-A-way II to remove the old bottom paint
layers and grinding out all the blisters, which were very small and not deep, the hull was filled and faired with VC Watertite. For the following few weeks the entire hull was draped with plastic and secured to the heated concrete slab.
When moisture levels were recorded by my surveyor to be in the single digits, the hull was finally sprayed with multible coats of Interprotect 3000 epoxy
barrier coat, then shrinkwrapped and moved outside. Since the final application served as a primer, all that I had to do below the waterline before launching was to apply three coats of Micron Extra with Biolux and install zincs.
Upon haul-out last season, the bottom still looked as if it was just released from the mold. This was an expensive job, but my philosophy has always been, if it's not worth doing right, it's not worth doing at all.