Replying to Using a skid steer for jump building.

I know that a skid steer can be used for building jumps on level terrain, but how can they do on hills? I would imagine that they would pretty much have to just push snow down hill and back up going up the hill. I am thinking of something larger than a bobcat with rubber tracks. What would be the likeliness of tracks slipping?

Sparks: If anyone has built jumps/ pushed snow on hills with a skid steer let me know how it went.