This is only used for fun and on very windy days. One person will mark the disc and one person will play back. Everyone else forms a line across the field. When the disc is moved, the player closest to the disc will go to mark it and force it back towards the middle (and a little foward). The player that was marking the disc will go back into the wall. Everyone else will adjust to make room for the old marker and take up the void left by the new marker.