Originally Posted by Mars
snowmobile skis have a ridge down their length. On the bottom of the ski. That might address your steering problem, since I'm guessing the skis are flat on the bottom.
He's right. It's called a skeg, snowmobiles all have them. Without that you won't be able to turn.
Otherwise, I don't think it will be the next fad. But it's cool and I'll bet you've have alot of fun with it.