Title: "There is always a well-known solution to every human problem--neat, plausible, and wrong
I think the best way to work on a horse's pacing is go farther than they
expect. I figured out that's why Redneck "drunk broke" horses can sometimes be
such a pleasure to ride. The trick is to convince the horse that you are
absolutely insane and may not ever stop riding. Thus he learns to drink and pace
himself accordingly. :-)
P.S. When my daughter's Welsh cross wanted to ride breathing down my neck
(riding in front of him on another pony) I started carrying a dressage whip and
simply taking a quick swipe (low not to hit eyes) behind me now and then. He
learned to be wary of riders ahead of him.