Start him out low and eventually get him to be able to trot over cavaletti that are 12 inches off the ground. He is to go over these with impulsion and a very light contact. This will encourage him to drop his head and lengthen his back.. which will develop his abdominal muscles and raise his back. This, in turn, will help him to work more off his hind quarters.
There is something about the outside of a horse that is good for the inside of a man. ~Winston Churchill
) Dinosaur Horse Trainer