CE Smith Boat Trailer Bunk Carpet Some might think that carpeting your trailers bunk board is unusual, but thats only if youve never trailered a boat. Boat bunk carpet is an essential part of trailering a boat safely and prevent gel coat damage as well. And, if youve seen trailers with worn, torn, mildewed bunk carpeting, the owner most likely took a shortcut and stapled residential carpet to the bunkboard. Residential carpeting is intended for indoor use only and will quickly degrade from water