I'm talking about the ones that do. And what they do is they put some kind of chemical such as karosene, mustard oil, ect. And the put it over the pasturns of the horse. Then they rap it so it burns the horse when it puts it's feet down so he picks them up quickly.
Another way is they file there feet down to the quick and the do the gait on the road for like an hour. To make the horses feet very sore.
They also used to put tacks and nails under there shoes.