Hmmm, who said perfect riding wasn't necessary? Maybe you've picked that up from someone else, but I believe perfect horseback skills are very necessary for any discipline and any under saddle problem, anytime, anywhere. But it is never going to just eliminate sour behavior.
The fact is, when you have a bucking, rearing, crowhopping, barnsour, lazy, ears-pinned-back horse, sitting pretty is NOT going to teach that horse to behave otherwise! Assuming the horse has no pain issues and the rider is not riding so poorly as to be bouncing around the saddle, or jerking the mouth off the horse then this behavior needs to be reprimanded with no exceptions.
