My entire crew wakeboards, but I have an uncle who is the coolest guy ever...that just cant. He's standard big dude...probably 350# or so. Considering trying to find him a kneeboard to try out. I figured someone would make a "bubba" type board, but cant locate anything. Nor do I see any weight recommendations on these things. Anybody got any ideas for me. I'd love to get him on the water enjoying something other than a tube.