Remember that when you are retreating in defence you have go in a straight line. This means that you can not change direction until you are in an onside position and not that the line has to be parallel to the sideline

When you are close to your own line there is often a need to cover gaps and ensure the blind side is closed off. In order to do this players need to go back together at a 45 degree angle, avoiding any gaps or dog legs

Remember to push hard for the first few strides to get into position early, communicate with your team mates and be aware of your surroundings