been on a few in la. dad built quite a few at the shop he worked at. the neatest one was a 28 footer with twin 502 chevys with 72 in 5 blade composite props. they used it as a shot barge for oil exploration . if it wasnt so big and heavy that would have hauled a.. , he built a couple of LT1 350 CHEVY boats with teflon coated bottoms to make them real slick when hittin muck or almost dry ground they did haul a.. ! lotta fun!