As a youngster I always put off breaking my FFA show calves to the halter until just before the show, by which time they weighed 1,000# or so. So I would tie the halter to the drawbar of a Farmall H, put it into first gear at idle, and then walk along behind it with my hand on the rope to make the calf think I was the one in charge. Worked pretty good. But come to think of it, I never even placed in "Showmanship", so maybe it didn't work so well after all.