strange someone mentioning C-Hawk ,i was at the C-Hawk plant yesterday. Dont worry about adding weight to the top. the hull on your boat is the same hull built today, out of the same molds that 25 hull is used in the pilot, standard cabin, and the sport cabin. the sport cabin is taller and longer cabin than the pilot and weighs 300 pds more. the only core materials i seen was marine ply. the transom, floors, stringers are all hand layed marine ply screwed together in a grid system than shot with the chopper gun. A very solid built boat. there is some info on
www.chawkboats.com