bill should post his recipe for homemade beach wheels once every couple months. I cooked up a set last year and they work well.
Do you have a link somewhere, I'm very interested in DIY beach wheels! Especially ones with a proven track record!
hopefully bill has the recipe, I can't find it. The only "hard" part is making the cradles but you can use large PVC pipe or use casting material (water activated fiberglass) coated with epoxy resin molded directly on the hulls.