Because summer is fucking boring, and Dendix is a fucking rip off, and because ice arena snow melts too fast... Astroturf. Ive never actually tried it, but it must work. If you go to Homedepot and look for the Astroturf long matts, you get these mats that look exactly like the stuff they put in chairlift lines. It doesnt seem quite as slippery, but soapy water can solve that problem. Then just build a little kicker out of wood, find a decent rail, and your done. Ive never actually tried this so I need someone to spend a whole bunch of money to find out that it doesnt work, before I spend a whole bunch of money to find out that it doesnt work.