Players stand in a row facing a basketball or netball rim. The aim is for the players to set the ball and attempt to get it to go through the rim. Players take turns and join the back of the queue after their set.
In this drill arms are warmed up. In addition it requires players to be focused if they want to score, improving concentration.
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.