Instead of posting a whole entire new topic, and sorry for hijacking yours, can I just ask, what do you do with a horse that doesn't respond to a whip either? I've tried what you's have said for HorseExpert. And I've got a small round pen.
I've even tried tieing a bag to the end. And he just keeps his head to me, acting like I'm disengaging his hindquarters, like HorseExpert explained. Though I'm not sure if he does it while riding, as I've never done it before. Maybe the last people trained him that.
But they had him lunging at their place.
Also, he loves me. Like really loves me. Wont eat if I'm not there. If I fall off, he stops short, and acts freaked out, and waits for me. Would that be.. Somethinging him from lunging?