a fishing boat has two pontoons connected by a panel . the boat is made of expanded copolymer , preferably a mixture of polystyrene and polyethylene . the bottom of the panel is above the water line when the boat is carrying a normal load . a motor mount is clamped to the stern of the boat by bolting a metal plate above and below a pad at the rear of the panel . a tie rod connects the front of the pontoons . bores or buckets in the top of the pontoons are closed by a plastic cover over a plastic rim adhered into the top of the bores or buckets .