Are they Fiberglass boats??
 

Here's a pretty interesting article on hull layup schedules. If you own a Sea Ray you might want to read this. This article was posted in 2000.

http://www.yachtsurvey.com/Fiberglass_Boats.htm

Saw this article somewhere a while ago, but still an interesting read. Makes you want to go hug your boat from the 70's or 80's...

It's more than Searay, actually Pascoe stated this construction covered " a wide range of builders.".
ed

Pathetic...that's what happens when everybody wants the lowest price for their purchases. If Sea-Ray built boats they way they're supposed to be built, the price difference would be much higher than the competition. No way they'd survive because most people don't care, believe the sales person, don't educate themselves, and don't have the money.

The coring material is called "SprayCore". Its a product that began being used in boat lamination to build up bulk. It came from the hot tub industry. The SprayCore saleman were really pushing the product, beginning back in the early 90's. It has no place in any type of a performance boat.

That's a great site. There is a ton of great information on that site.