i did it and i used piiner like 140s and it worked fine... i just grinded down the edges a little and taped shoes on instead of bindings. and i had a blast
Haha they're not uncommon. Just a BMX bike stripped of all its mechanical components (chain, wheels etc) with foam duct taped to the parts that touch the surface. They're fun as hell, and look something like this.
buy some of those foam noodles that you use at the pool. duct tape them to your shoes, then jump on the tramp. you could grab just like on skis, and it would be dope. i havent tried it but it sounds like it would be cool