We run a simple play, a run up the middle. The play usually get stopped for a short gain. I will yell at the team, loudly so the other team can hear ,(without a huddle) " Do that play again until you get it right". Then instead of the same play they will run a play action pass to the receiver. All the kids on the other team always run right to the middle expecting the same play, leaving the outside wide open. We have scored a TD every time we try this.