I don't drive, but the new mini does. Well, supposedly he does. If I wanted to ground drive him, I would need a bridle, reins, and some sort of surcingle anyway, so would I be able to buy a harness and just use what I needed? And if I was going to buy a harness, the 2 cheap ones I see are tough one and ozark. Is one better than the other? He is either a big A size or a small B size if that makes any difference.