Hi MJ, Saw them on Rexy too. Remember first reading about them over twenty years ago as tripod fishing. Recollect that it was a case of making your own. Three steel pipes hinged & braced with a pad on the end to stop them sinking into the sand. Main problem was that you were stuck there until the tide went out again. Worse than being stuck on a sandbar in a boat as you cant get off to stretch your legs. Regards Bill