Well, there's another active thread or two right now about that very subject. Here's what I posted in one thread about roosters pecking ankles:
I just turned around and stepped toward him, making him back up. Then I continued forward, following him for a few minutes while he kept turning toward me then away to move further away. When he faced me, I'd take a step.
I didn't chase him by running, I just forced him to keep going until he no longer wanted to face me off.
I also knock him off the hens if he mounts them while I'm in the run in close proximity. They're MY hens, not his; I am top of the pecking order in THIS flock. I don't whack him hard, I just push with a foot. (Two of my hens actually run towards me when Carl gets into his Gonna Get Some moods.)
I've never experienced any other bad behavior, so I can't address that. I talk to all the chickens, including the rooster, and when they were confined to the run, I sat in a chair IN the run, calmly reading or just watching them all. It's restful. When they come around, and they will - chickens are very curious - I don't make any sudden movements, and I use a soft, encouraging tone of voice. I give them treats every day.
I didn't realize Carl WAS a rooster until he was about 10 - 12 weeks old. So he got treated just like all the pullets. Nothing different; I picked them each up when necessary, I moved them out of my way when I had to, and I tried to give everyone treats from my hands. I now know the rooster is supposed to stand back and let the ladies eat first, so I don't TRY to get him to eat from my hand any more. (But I do toss some treats a little bit further away in his direction when the pullets are all gathered around my feet and might not notice the extra goodies I save for him.)