Oh yeah, that indoor outdoor carpeting, or astroturf is supposed to work superbly. I use indoor carpeting. It just has to be stiff short bristles/threads. I have a 5' start ramp at roughly a 45 degree angle, and then its a slight downhill after that. Not much, maybe 10 degrees. The inrun after the start ramp is only like, 6-10 feet long. And last time, i mixed water with glass cleaner and car wash soap, and it worked exceptionally well, although I didn't actually slide the rail.