Skiing Character Controller

I'm working on a game that uses virtual reality and physical input devices (i.e. accelerometers) to control a skiing "game". I'm horribly stuck, however, on how to implement the ski controls. I've tried simply adding force in the direction that the skis or camera is facing which kind of works, but not really.

Eventually I'd like to perform a rigorous simulation of skiing and all the physics associated, however right now I'd like to implement controls more similar to something like SSX.

Is...

Skiing Character Controller