Rick used skid angle defined as direction of travel of edge versus angle of edge, and we later sorted out how it differed from steering angle.
Skidude suggested that tip steering angle could be used to provide some description of the turning for an edge-locked carving ski.
I don't think steering angle is really that useful for edge-locked carved turns. You aren't skidding, and tail follows tip. Give a radius of curvature and you pretty much have it covered. One could extend the theory LeMaster used in his book for steered turns to carved turns so that we had a unified theory that covered all types of turns, but then we would have to consider centrifugal force instead of forward momentum. It's too complicated for what it gives us.
That is all.