You can use a fishing net to catch a bad one. Human-aggressive roosters do not get to stay here. If someone wants them, they can have them, with full disclosure, of course, or they will be culled.
Here is my theory. A rooster who bites the hand that feeds him isn't very intelligent. The smart ones don't hurt the food suppliers. If a rooster has it in him to be aggressive to people, genetically or whatever, then handling him alot as a youngster will most likely make it more likely he will attack you when his hormones kick in later on. It won't cause him to be aggressive, but it will make him very comfy around you, make him think of you more as an equal and therefore, he will take you on someday. If he does not have the seeds of aggression in him, then handling him as a youngster will just make him more friendly. No methods will really do any good if he's just that way. He may back off, but he'll always be looking for his opportunity to attack. He may even become afraid of one person, but still attack others. So, for what it's worth, that's my $10 (inflation).
Here is my theory. A rooster who bites the hand that feeds him isn't very intelligent. The smart ones don't hurt the food suppliers. If a rooster has it in him to be aggressive to people, genetically or whatever, then handling him alot as a youngster will most likely make it more likely he will attack you when his hormones kick in later on. It won't cause him to be aggressive, but it will make him very comfy around you, make him think of you more as an equal and therefore, he will take you on someday. If he does not have the seeds of aggression in him, then handling him as a youngster will just make him more friendly. No methods will really do any good if he's just that way. He may back off, but he'll always be looking for his opportunity to attack. He may even become afraid of one person, but still attack others. So, for what it's worth, that's my $10 (inflation).