You're describing a cockerel "coming into lay", not an aggressive rooster.I've never had to do all that with my rooster, he did misbehave when he was coming into his young adult stage, he was an absolute jerk to the hens. He would also hog all the treats and food. I'm glad it only lasted for 2 months. Now he's just a perfect gentleman. During all that he never attacked me. Just sharing.
Oh also his sons were the same as there father in behavior.
None of my roosters sons have been anything other than great flock leaders.