At set up im 50/50, w/ wedges 70/30 front foot bias. Weight shifts in response to the hands led pivot.
Rt leg straightening shouldnt be an issue as long as you are not turning to far on BS. Just set up w/ your rt forearm on plane (unlike S&T) keep your head rock steady and trace the straight plane line. I have P's vid and the flying wedge stuff is all good info, use angle as well which they use, but dont really mention by name in the S&T video....