Well, I have a problem with lunging him. He used to be great at it. But then when we started having the trailer problems, he had to lunge and then he got to rest in the trailer. Well, he learned that lunging means he has to work hard, so he just doesn't do it anymore, he will basically end up lunging you. I don't know how to make him lunge. He backs up, spins, side steps, all to not lunge.
Does anyone have an idea how to get him to be a good lunger again?