I don't really follow any method except the rule of "Make the wrong thing hard, and the right thing easy."
How can he just 'cut other riders off' when the rider is supposed to be steering him? Does he ignore her leg? Then she needs to reinforce her leg aid with something like a crop. As soon as he listens, then you go back to a soft leg cue again.
Have you thought that MAYBE the reason he is biting is because he is in pain? We had a mare that acted like this. Turns out she had chronic head pains due to running into a tree at a young age. She was always in pain and thus lashed out at other horses, not correcting them just plain going after them.
She is also the mare that would buck under saddle, go to bite others for no reason.. a pain on the ground, under saddle, and in her stall, despite how much ground work or how many corrections or tail-whoopings she got from horse and human alike.
Once she was treated, her attitude changed signiciantly.
It's worth investigating.
Vet, chiropractor, and any other holistic approach. Find something that helps him out, and paired with good handling and riding skills (I don't see how shaking a rope does anything to stop poor behavior..) will turn this horse into a respectable mount.
"Strength is the ability to use a muscle without tension"
Last edited by FlyGap; 07-19-2013 at 05:54 PM.