This is a great drill to practice the different attacking approaches, from 2-step to 4-step.
As Coach Tod Mattox says, it's a good idea to teach all three approaches because it gives attackers flexibility on different sets – including bad sets – and also helps middles adjust their approach according to how much time they have to attack.
A few important teaching keys:
– The second step should always be behind the 10-foot line.
– Attackers should swing either on the way up or at the top of their jump.
– The attacker should always land on two feet.