If a man is moving backwards then push him just a little faster than his own movement. Then when you get some forward reaction pull harder than he is pushing you. This can be done from front to rear or from side to side or a combination of all four. The actual time during which a man will be doing what you want will be very short so that it is necessary to attack immediately the opportunity presents itself.

As for your own movements, try to make them unpredictable. Change direction as often as possible in any random combination.