Have a defending team consisting of 14 players. Everyone else can be an attacker, give these players a different coloured strip and start them inside the square. Defending half-forward line, wings and on-ballers also start inside the square. Half-back and full-back lines start spread across the 50m arc.
Coach kicks a high ball to (A) to jumps and marks just outside the 50m mark.
Attackers, and defending half-forwards and midfielders run inside 50 as (A) marks and goes back for the shot.
Players should organise the zone as per the diagram. Arrange in roughly a 7-3-2-1 formation
7 around the goal mouth
3 in the next line, covering equal space
2 in the next line, quite central
If ruck can't get to the goal square in time, they need to call to the CHB to get there, and stand the mark.
If ruck stands the mark, beware of a nimble small feigning a kick and running around them to get within range.
(A)'s team mates run inside the 50 to provide options while defenders cover anyone entering their area of the zone. (A) can try to find one with a kick, or take a shot of they think they can make the distance. Defenders must cut off any pass, mark, or punch over the line.
Attackers are outnumbered and should never score. If someone is found with a pass, work out who should have covered the player and adjust zone if necessary.