Much like sledding, all this sport requires is a slope, a little momentum and the gumption to haul a kayak up a snow-covered hill. Once in motion, you might find the kayak a little more difficult to handle than in water, but having a paddle to steer gives you more control than in a standard sled. And after considerable practice, you can start adding wax to the bottom of the kayak to hit faster speeds. Most ski resorts don't allow snow kayaking, but luckily this sport can be done just about anywhere that gravity and snow permits.