When my EE roo was young, he was pretty dumb and brutal. He has curled toes, so he can't get up and hold onto hens very well, so he would often chase them down for minutes on end. He even made a couple have bloody combs, yanked chunks of feathers out of their necks, and they never submitted to him. What I ended up doing was giving him a seperate place to stay, where he was able to roam and see the hens, but not touch them. (there was a chicken fence barrier with bird netting over the top.) After weeks, he began to learn how to get their attention and trust by trying to show off for them, give them treats, etc through the fence. The hens eventually would submit to him, unknowing of the fence, and once I was ready for raising new chicks, I started a "weekend dating" schedule, where he was only allowed with them on weekends. It worked out pretty well - He learned his lesson, the hens began submitting to him, and for the short weekends he got out, things went fine. No chasing, no blood, no violent forcings. Once he's done, I stick him back in his place.
( But on shorter note - You only should have a roo if you need one. The hens will lay regardless, and probably be happier without one. We only have one because we want babies. )
