lucky stiff...!!!!
do core samples in different places of the foam.........then do samples on the stringers....if the stringers are dry....and the transom is good....button it up and go fishing .......
lucky stiff....
sandwich the center stringer with a piece of 3/4 ply, on each side, so it laps both ends by atleast 2 ft, glass it in, and put the deck on it.