I certainly agree with Sunchaser ....here is an excerpt from a review on the 430...
"Such performance does not come courtesy of lightweight construction. The 430's fiberglass hull has a solid laminate bottom, with weight-saving cored construction above the boot top, in the decks, and in the superstructure and interior. The deck liner is molded as a single full-length piece so that when joined to the hull it essentially forms a unibody. Premium low-emission gelcoat is used to resist weathering and yellowing"
Or the link to the review...
Mainship 430 Trawler