I would reccomend this sort of method to anyone with horses, as horses are naturally follower (herd dynamics) if you can establish yourself as an alpha (not in the way humans view "alpha" dominance, rather in the way a horse would) then everything else will be easy and there will be little resistance when it comes to who's in charge of who, you will just need to establish the correct communications with your animal and provided you have the consistency it takes, you and your horse will be bound for great things!
I just looked into Dennis Reis, man is he expensive!
myself and fess have given you all the necessary information entirely for free! :) and i'll happily answer any questions to issues as/if they arise.
& thankyou fess for the kindness!