Patent ID: 7413209

Claim:
A boat trailer for retrieving, transporting and launching a boat, including a pair of bunk boards for supporting a boat on the trailer, the bunk boards each including: a load bearing surface for mounting in a sloped attitude for facing and engaging a sloped surface of a hull of the boat mounted on the trailer, the load bearing surface having a length for extending along the hull of the boat and a width, a series of alternate raised surfaces and lowered surfaces formed at spaced intervals along the length of the bearing surface with the raised surfaces each defining first and second oppositely sloped lifting edges extending diagonally across the length of the bearing surface, the first sloped lifting edges oriented to lift the boat hull when the boat hull is advanced in a first direction along the length of the bunk board and the second sloped lifting edges oriented to lift the boat hull when the boat hull is advanced in a second direction along the length of the bunk board.