The prop #'s probably tell what it is. The Wetback a pal built that Ive driven quite a bit had a tendency to cut the top off a wave & smack the drivers face wickedly. His had traps & was nose heavy. By changing the traps to hold more air & end at the transom, eliminating the heavy front hatch cover for a 1/8 ply cowl & moving the gas tank back it got alot better & is faster too. His is a Clark Craft kit & is pretty heavy at 178 w/ hardware.