So made a little head way tonight, I got the other side all tacked in place and the transom tacked in also. Then I flipped it over and tacked the sides to the seats, the seats act as the frames in this boat, so I had to clamp and pull the sides in tight to them, then tack weld for now, I need to fill the seats with foam, does anybody know where to get closed cell floatation foam, I think you can get a two part expanding foam from industrial plastic, but was hoping not to go that route, I still need to remove the seats to weld out the inside of the boat, so I was thinking of sliding some in, when I reinstall the seats? Thoughts ?