3 balls in play, teams of 4 in each half of the court.
Each court has 1 ball which they must pass around constantly, with all players participating.
At the same time, each team attempts to pass another ball back and forth between the teams, with the aim of getting the ball to land on the opposition's side of the court.
Ensure fast passes, with players calling out what they are doing
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.