There is a pile of mountain sledding done around here and the four stroke sleds simply suck in stock form. Most guys turbocharge them and now you have a whole new animal, pick your nearest mile long 80 degree hill and go for it. They almost climb vertical walls. The only thing stopping you from getting to the top is your size of your you know whats.
Then all of the fun begins, what goes up must come down. Once you finish your climb you need to turn around on a very steep slope....on a ten foot long sled....a precarious pirouette to say the least. If that doesn't get you the speed can. Sleds virtually have no brakes, especially on really steep powdered snow hills. Once they go sideways....lookout. Billy Bob and his buds will usually auger in a couple while we eat our lunch and get entertained. You see everything from just a busted windshield to sleds going end over end ten or twenty times, they fly apart pretty good.