One of the pro’s of 3 person officiating is that the crew has better angles on the play, and therefor can serve the game by making better decisions. If you ask us it’s not the only pro. Being on court with 2 friends is better than with just one 😉
Fiba Asia did a great session on mechanics in 3po. It’s not covering every single situation you will meet but it gives a nice start. If you really want to learn it i’d suggest you drop us an e-mail. We can notify you as soon as our eyeopener camp has a date for the upcoming edition.