Position 2 teams of 6 players in opposite corners of the grid and number them from 1 to 6. When the coach calls out a players number that player in each team runs around the grid and enters through the side gate.
The players with the ball have to then try and knock over the cones on the oppositions goal line.
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.