"Ray" wrote
My second question is that the dealer then went into a long discussion
about me wanting a boat that was in salt water as the salt molecules
would have made the water molecules larger and it would be less likely
to have blistering on the hull. Is hull blistering still a big problem?

He hee. That's pretty funny about water molecules being larger in salt water.
Duh. Even I know how dumb it is to think that. Salt doesn't become part of the
water molecules. It just goes into solution and is in there between the water
molecules.
But, I've always heard salt water boats have more blister problems than fresh
water boats. Osmosis is a problem more on some older boats then the newer ones.
The newer ones use isothalmalitic resins or epoxy barrier paints or even special
water proof gel coats to stop osmosis. Real old boats seem pretty immune to blisters
too. Maybe they used to make fiberglass better in the old boats. I don't know.
Catalina I think has a pretty good warranty against blisters.

Cheers,
Ellen