NO SWETT
I used a product called "NO SWETT" and it was great. The yard sprayed it on, (although the can says it can be rolled or brushed) my crew of three waited about 25 minutes, and with 4" putty knifes we had about 12 years of bottom accumulation off in about 30 minutes. ( it's a 34) A little messy, because the paint comes off in strips which fall all over you, but all we had to do was roll up the plastic and dump it. About the time we had 2/3 of the boat done we came up with a neat system, shoulder to shoulder and scrape in front. A couple of "going overs" with thinner and it was to the original bottom, with a slight blue tint. I screwed up by putting an ablative paint on, while I should have put a hard paint on and then ablative over it.Good luck and have fun!!