Hi. I had a sweet silkie roo that turned into the roo from hell. So I went in the pen for about 15 minutes twice a day for a week. I kept walking toward him, making him move, move move, if he stopped, I nudged him with my foot and kept him moving. Then he would go for a drink. I blocked him. He went for the food. I blocked him. He went to jump on a hen. I blocked him. So he just stood there and stared at me, not knowing what I wanted him to do. After a week of that, he would step away from me when I went in the pen, and eventually he became my best buddy again. He died before Christmas, and I cried my eyes out. Since the behavior training, he was my huggable snuggly rooster.
My neighbor has a huge barred rock roo. My neighbor wanted me to clip his spurs. I went over there and he came at me. I went after him, walking, etc etc. Then picked him up and trimmed his spurs. The next day I went back to powder him for lice. Same thing. Then I picked him up and powdered him.
Bottom line, you have to make darn sure that the roo sees you as the alpha roo, YOU can make him move, stop, not touch the water, not touch the food till you say okay. Never back away from him, never be afraid. You are the boss and you don't even have to be mean about it. There's a pecking order, and you are number one, top dog.