The player at the back of the court overhand passes the ball to a setter who sets it back to zone 6. The player receives the ball and plays it back to the setter with an overhand pass before receiving the ball in zone 4 to spike.
This is a good drill to use as players as involved in both receiving and spiking the ball, similar to in a game situation, enhancing their co-ordination.
New hitters rarely miss because of their arm. They miss because of their feet. Build a reliable approach, then time it with your setter.
When your hitter gets stuffed, five teammates standing and watching is how you lose the point. Good attack coverage turns a blocked ball into a second swing.
Coaches spend hours correcting arms in serve receive when the real fault is almost always the feet. Fix the movement and the platform fixes itself.