I also love Monty Roberts' method. I think you did a good job explaining, Gus, but a couple things you forgot to mention...when you send your horse out to the rail of the round pen, look him straight in the eye and have a cotton lead rope (if your horse is sensitive or whip-shy like my TB) or a lounge whip if he is more lazy, to pitch towards his butt if he tries to slow down from a brisk trot or canter. Keep staring him directly in the eye all through his signs of submission...inside ear cocking at you as a sign of respect, mouth chewing and tongue working which is him saying "I'm a herbivore so am no threat to you" and then finally the running with the nose right along the ground. Why do you tell them to whoa, Gus? In Monty Roberts' method, he tilts his shoulders and finally looks away from their eye, tilting his body at a 45 degree angle to the horse, so he is facing about 10 feet in front of them as opposed to his shoulders being perpendicular to their body (directly facing them) when he is driving them away. They stop then (you don't have to tell them to), as soon as all the pressure is off, and turn to face you and finally walk up to you and sometimes (depending on the horse) will touch your shoulder with their muzzle ("join up"). You then rub them between the eyes and walk around in circles and arks...they should follow you ("follow up"). If they don't, drive them away again. Before you try this though I recommend reading Monty Roberts' book, The Man who Listens to Horses, I believe is the title. But this gains trust so quickly, just by talking to them in their own language. You establish authority and also teach them that you can be a reliable leader, and often after this horses will do for you a number of things they refused before, simply because they now trust you...like loading in a trailer, letting you touch their sensitive areas; standing quietly when their hooves are picked out. In Monty Roberts' case, he got a terrified racehorse to load in a start gate; a stubborn mare to stop pulling away when tied up; he even used the method to a greater extent and got deer to join up with him! (took weeks though!). Horses are flight animals so hate any type of confinement; they have to get used to it. Or, using this method, they just have to trust you. So many horse/rider problems could be alleviated if there was a stronger trust bond...I think every horseperson, from a pleasure trail rider to a 4-star eventer, should look into that.
He knows when you're happy; He knows when you're comfortable; He knows when you're confident; And he always knows when you have carrots.