Eyes up looking at ball trajectory with knees bent.
Players should be on the balls of their feet, bending the elbows and pushing through the ball with fingers at point of contact. Head is not level with ball at contact.
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.