Crow Hop / Leaping

[CecilOne]

1) That's pretty much what I thought, that you don't actually need both feet airborne simultaneously to crow-hop.
2) I also don't think the pivot has to leave the ground at all to push off illegally in front of the plate. It might not be a crow-hop, but it's still illegal.
3) If the pitcher has both feet off the ground at the same time and lands on both or lands on the stride foot and drags the pivot, I call that a leap. In other words, during the stride the pivot foot also leaves the ground, even though it doesn't replant. If both feet are off the ground (above plate level) at the same time, that is illegal as far as I know.