Leap, Crow Hop vs replant

[DaveASA/FED]

I said I was going to start a new thread so here it is

"Ok I’m going to start another thread about this because I know this will get things going. A crow hop is starting the pitch from somewhere other than the pitching plate. Pitcher has hands together and leaps, drags or steps forward then starts their pitch (separates their hands). This is starting the pitch from somewhere other than the pitching plate. Usually, but not always, when they reach this new starting point they replant and push off from this point in front of the pitching plate as they start the pitch. A leap is just that both feet are airborne at the same time. Usually when they land they are already well into the windup and deliver the pitch shortly after they land. There is not usually any replant or push off after they land, just the force of them being airborne and driving toward the batter is the advantage."

One more topic on the replant. I have heard some discussion about the pitcher that closes her hip being called for a replant. I would like to hear others comments on this and what rule references you might use if you would call it illegal.

Delivery discription: All prelims are legal, right handed F1 then steps out drags away opening hips toward 3rd baseline, as ball is coming downward and she is delivering pitch she pushes with the pivot foot bringing her right leg forward as she closes her hips bringing her body square to home plate.