The Jump Serve

The jump serve is a serve version of the spike — the most powerful and most analyzable serve as a closed skill. You take a spike-style approach (3 or 4 steps), toss the ball OUT in front (often on the second step) so it leads you into the court, jump, and deliver a full kinetic-chain arm swing.

FilmableFilm this on your phone and TrueForm measures your body mechanics and tells you what to fix. You get angles, not a made-up score.