Those sorts of labels demonstrate a rigid either / or mindset. Functional stances are continuously variable because the terrain we are negotiating is so variable and we keep changing direction as we make our way down that slope. That doesn't mean a theoretical best stance doesn't exist but it is a moment to moment thing and it changes from moment to moment.
The adoption of a single stance width has been discussed many times here and it has led to all sorts of misguided advice. Look at the montages I posted. World class skiers who know a thing or two about what works "best" showing a wide variety of functional stances. None are one footed though. Why aren't they using one footed stances? It's not because they cannot perform one footed turns or maintain ultra narrow, or ultra wide stances in their turns.
They know the one size fits all thinking produces rigid ineffective performance.
Edited by justanotherskipro - 3/12/16 at 5:36am