Looked the boat over better today but I still can't get into the bilge because of frozen hatches. The transom seems real solid as do he decks but everything is frozen. It's n 85 hull, would that be solid glass or cored most likely? Also what did they make the stringers out of? And I assume balsa cored decks? It has a new tank installed in the center, i see some online had two tanks is that the normal layout? I know all are different but I am trying to get an idea of what was most likely used.