Three hitters, coach and a feeder on one side. Coach tosses the ball and hitters take turns in spiking. The goal is to hit or tip the ball into the targets. Rest of the players on the other side collecting the balls.
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.