Originally Posted by salamandyr
A non-cored deck would be preferable, of course, and I think most of those other 4 models in the 28+ length are non-cored.
It's a virtual certainty that ANY boat you look at will have a cored deck. Solid glass hulls are likely in the 70s, but even not all of them.
It would be an extremely unusual boat to not have a cored deck, most likely (hopefully) balsa cored. Some had extensive use of plywood in the deck layup and they are more problematic than balsa.