Originally Posted by Riding Rich
I'm thinking steel skis with 2 rolled beads protruding down about 3/8 inch.
Like a snomobile will allow sliding forward and back but not sideways.
Picture a set of Training wheels on the front of the bike, not wheels though SKIS.
at loom mountain you can rent a bike with a ski in back and one in front so you can steer down the mountain with them. They work!
Maybe can get a idea from them.. Heres the link.. Rider Profiles
Felix's bag of tricks.