The emphasis of this drill is on proper mechanics of blocking specifically swing blocking. Players will work on their timing on blocking the middle attack and outside / right side attack. Middle blockers well block one on one in the middle and then transition to assist with an outside block. Right side blockers, during this drill, will solo block.
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.