Players stand 5m apart
Push through the ball with tips of fingers and keep the knees bent.
Bend arms at elbow and push through the ball on 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.