I wish it could be something this simple in our case, but I've been wearing the same white rainboots forever. And, our roo attacks my handyman and our petsitter as well. Anyone who develops a relationship with the hens becomes a threat to him. Well, a friend here in town who urban homesteads is going to take my roo because he actually wants a very aggressive rooster for his new flock. I'm so glad I remembered to talk to him about my problem.
My next problem is to decide whether I want to get another roo in the hopes he will be gentle, or forego rooster entirely. I was really loving having the full flock experience until the rooster started drawing blood. As my friend Ken said, it's just his genetics, he's just doing what he is meant to do, and yeah, I know that, but still.... I can't be afraid of my backyard. I'm a super sensitive person and my preference is that my chickens all die of old age, so this is REALLY hard for me, the whole thing. Fortunately, he will have another chance with a new flock.
Rats. Well, it was worth a shot
As to another rooster, maybe you need to buy one that is old enough to have proven himself gentle. Seems plenty of people on BYC have roosters that get along with "their people" just fine. I have heard that Cubalaya roosters are gentle but they are a whole other shape and size of bird so maybe not the best choice.
Bruce