I am going through this right now on a 1969 Formula 233. Try easy off oven cleaner, then power wash. I used about 5 cans, and 3 pressure washings, it did not take all the paint off but took off a few layers that made sanding it much easier. The only place that it did not make much difference was towards the bow where I assume the bottom paint was dry most of the time when the boat was in use and was therefore much harder. I finished removing all he paint on the port side. The oven cleaner also took a bunch of the boot stripe off. I think if it was warmer the oven cleaner would have worked much better. I also tried interstrip and another nasty chemical stripper from the hardware store but I think honestly the oven cleaner worked best. When it came down to it, about 50, 80grit sanding discs and 3 days of sanding worked best. If you want check out my results, the bottom paint removal is at the end. I also have those nasty air pockets on the chine. I was going to use the interlux watertite to fill the dings but now I want to look into that 6 10
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