If you had David Gallop's power??
One thing I noticed this afternoon that I'd like to see changed in the rules is players from an attack team helping out in the tackle.
If a player is being driven backwards or losing out in the tackle, how many times do you see a swarm of blokes come rushing in, help push forward and tear players off the tackle.
IMO, that should be called an obstruction and a penalty given. If you interfere with the defense and by grabbing a player who is making a tackle you are obstructing the defense.