If you are designing your plan for your team's training, you are better off focusing on an “arc” of learning for a specific area. This means spreading out the training over a number of weeks, rather than dedicating one session to this. MORE
1 v 1 ruck contest training
Here’s a good technique: Teach your players’ to race back into the ruck contest, with the player pivoting around a cone low, before driving back the threat to the ball.