I have an '87. It had an epoxy barrier coat. One season, some years ago, I had the bottom sanded down and reapplied the barrier coat. It's a nasty job, but not hugely expensive. If you don't see blisters, you could have a boatyard sand it (that's the nasty part) and then you could apply the four coats of barrier epoxy yourself. If you see blisters, that's another matter entirely.Thank you all for the info and advice. I was looking at a 1987 but maybe I ought to consider a 1990 model. However I will check her for blistering first, cause I really am in love with her.