Paint
Blisters should probably be checked out by the yard or a competent boater, but if it is just the paint blistering up, I have used a small putty knife to remove the blister (depending on its size). Bottom painting, I have found to be reasonably easy (my first attempt was a 34' Morgan). Just take your time doing the sanding then wipe clean with a tack cloth or wash thoroughly and allow to dry. I am by no means a professional and would certainly double check what a 'proper' procedure is. I imagine whomever you purchase the paint from could go over it with you, but personally, I don't think it is really an intimidating chore.Good Luck!Marcus