I haven't used this method personally, but I haven't had a rooster challenge me in years, either. Pretty sure Beekissed uses it or she wouldn't advocate it.
Well, here are your options:
1. Leave things as they are and be afraid to go near your flock.
2. Get rid of the rooster - that means putting him in the freezer or finding him a new home with full disclosure of his human aggression.
3. Teach him that you are the boss. Beekissed gives excellent...