FiveFrameSwing
Banned
Okay cool! So what he's advocating is that if you slam your front side into the swing, the rotation will happen.
So in this case the instructor has left out the whole "let the rotation happen", because if he was allowing the rotation to happen, there would be movement with the back leg.
It may be that the instructor believes this kid is at the point where her rear leg needs to be deadened further so that there is a 100% conversion to a front hip pivot.
In any event, it is a poor swing model. The kid will eventually learn this ..... either the hard way or the easy way .... assuming that she plays at a high enough level.