Two players working together to block a smash from an opposition player.
Both players jump at the same time as the opposition 'Smasher', keeping hands high and parralel to the net.
Keeping eyes on the 'smasher' at all times throughout the block enables possible position changes at the last minute.
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.