Patent ID: 8628105

Claim:
A boat trailer comprising: an elongated trailer framework, a pair of bunk boards extending along the sides of said framework, a pair of bunk board guide-on-post assemblies mounted to said trailer framework, each said bunk board guide-on post assembly including an L-shaped support including a laterally extending leg for mounting to said trailer framework and an upwardly extending rectilinear support bar, said upwardly extending rectilinear support bar defining a longitudinal slot therein, and a rectilinear tubular guide-on post defining a laterally extending connector pin opening that registers with said longitudinal slot, a connector pin extending through said laterally extending connector pin opening of said rectilinear tubular guide-on post and through said longitudinal slot of said upwardly extending rectilinear support bar of said L-shaped support, and said rectilinear tubular guide-on post has an open lower end and a closed upper end that traps air in response to the level of water rising above said open lower end, such that said rectilinear tubular guide-on post is movable along said upwardly extending rectilinear support bar of said L-shaped support in response to partial immersion of said rectilinear tubular guide-on post and said connector pin moves with said tubular guide-on post along said longitudinal slot and said longitudinal slot limits the distance of movement of said tubular guide-on post.