two lines of players opposite each other in 2 lines.
one of the teams has the ball and has to pass the ball along each player in the line.
The player in possession of the ball when the coach calls out go has to run around the cone at the end of the grid to try and run the full length of the grid to score a try. The player from the opposition in line with the player that is running can try to stop the player scoring by running around the cone and tagging the runner before they reach the 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.