Spoil the cockerel, and he'll be mean. Raise him feral, and he'll never attack.
Often that's the case. People raising roosters, and who doesn't want to love, cuddle, hand feed, and all that good jazz with the adorable creature?

Then, because he has no fear of you, he'll be at your heals. When you're raising them, don't give them any attention. If they come near, scare them off.
Yes. It's hard. I hatched out an adorable.cockerel, and I was the first face he saw. Something is wrong with him at first, so he was extremely docile, and wanted to be around me constantly. He'd just randomly fly up and perch on me for no reason! I've tried shoing the adorable thing away, and I'm hoping my efforts worked, but he's still a little too friendly...