IMO if you can't tame him, then he needs to be put down. Offering your mean rooster to someone else is negligent and putting them at risk of injury (as well as children, if there are any). That is why no one wants your meanie. Roosters that don't tame seem to be genetically programmed to fight (versus flight). There is no place for a boy like that. Plain and simple. If you can't do it, find someone who can.
I do not believe in torture treatments either. If the roo is mean and it can't be resolved reasonably, see above. I have found that "reasonable" roos can be tamed through environmental conditioning. Get him off of the roost at bed time and carry him around for 20 minutes each evening. Talk to him, pet him in a caring manner and gently place him back in his spot on the roost. He will struggle the first few times and try to get away. Don't let him. You make the rules..you pick him and you hold on tight. If after two weeks, he continues his naughtiness, see above. You should notice him wanting to keep his distance from you within a few days. If he can't respect your space after you've tried to work with him, then he needs the axe. That is the responsible thing to do with an aggressive rooster.