Players partner up and form a circle around the ball like in image on the right. The animation uses five players but if you are confident your players will not run into each other you can add more. The goal of the drill is for the defensive players to legally block out the offensive player for as long as possible.
Some coaches time how long it takes the offense to get to the ball giving the defense “3 strikes”. Whatever team has blocked out the longest after 3 strikes wins.
Other coaches just do the drill for a set period of time.