Stage two of the serving progressions;
Throw the ball to go over the net and bounce once to your partner stepping forwards with the opposite leg to the hand that you roll with (using body weight) and releasing the ball slightly higher.
World Rugby has reportedly conceded Aaron Smith's disallowed try in the World Cup final should have stood.
"It is not only useful for staff who are experienced but a valuable tool for those subject staff who have to take teams."
The variety of sessions across sports - sometimes we steal session ideas from one sport and use them with another.