1. Explain what you mean by communication to the players or even what they mean. A better understanding might lead to more use.
2. Play "no ball" touch rugby. The imaginary ball can only be passed by the receiver shouting the name of the passer and the passer shouting the name of the receiver. All passes have to be backwards. Possession is turned over when the ball carrier is touched.
3. Blindfold a player. You hand him balls and he passes them to players running onto the ball.
4. Play silent rugby. Players learn how to use non-verbal communication.
5. Play "trigger" rugby. Design four or five trigger words that the ball carrier must respond to. If he makes a wrong choice then the ball is turned over. He can not pass the ball or form a ruck unless he told to do so. You can start at walking pace (but with tackling).
6. Cut down the communication language to about six phrases. "Left, right, long, short, go ground, 9 ball" for instance.
7. Repeat the upsides of communication every session and ensure the players know it should be specific.
Rugby Drills