I think a stance is a good way to do Stone Dragon flight, because then using it entails giving up other stance benefits, which is a cost that only heavy Stone Dragon users will want to pay -- and they'll only want to use it when needed. It also gives the rare opportunity for tactically switching stances mid-fight if you need to get airborne.

In that case, the Master of One ability frees up a stance slot, so it's still a great feature.

The image of flying on a boulder is cool and could be a good utility maneuver with full-round activation. For the stance though I'm going to dish the sky-surfing thing and just go with a bland "Stance of Sky Leverage".


As a note, IMO, Stone Dragon shouldn't be Avatar earthbending; the point is that you draw strength from the ground, and use it for leverage, not that you're an elemental caster. The supernatural maneuvers should be rare and not overly dramatic.