This move is a great counter to the jump hook. Or vice versa.
The Up and Under is effective with two really important things.
1. Feet or Foot and shoulder past the defender. This is the point where you have them beat. You have the advantage.
2. Jump towards to the rim. This allows for separation from the defender even more.
Any player, big or small can utilize this move in the post area.
Give it a try and keep your defender off balance.
Player Development Coach