If an opposition forward has come into our forward line,(HFF/FP) then the player opposing this player must come with him.     ( unless otherwise instructed).

Same process as the previous (ruckman) example.

This now means our HFF or FP moves to the back line taking his opponent with him.

If the opponent doesn’t budge place yourself into a useable (dangerous) position.

DON’T DEFEND ALL THE TIME.

Use Commonsense.