Snowboard rhymes with:
aboveboard, baseboard, billboard, blackboard, cardboard, checkerboard, chessboard, chipboard, clapboard, clipboard, containerboard, dartboard, dashboard, fiberboard, fibreboard, fingerboard, floorboard, hardboard, headboard, inboard, keyboard, linerboard, mopboard, onboard, outboard, overboard, paperboard, pegboard, plasterboard, pressboard, scoreboard, seaboard, shipboard, skateboard, smorgasbord, springboard, storyboard, surfboard, switchboard, wallboard, washboard
Snowboard sounds like:
samford, sanford, scampered, schumpert, shumpert, snowbird, sunbird, swineford, swinford