Paperback by Ed Connell.
Connell's second book, Reinsman of the West is the second half of the training process. It gives the Why and How of making the straight-up spade bit horse out of the hackamore horse, bitting gradually so that the horse will slide, rein and stop on only the slight movement of the rider's two fingers. This book takes the mystery out of the spade bit and shows, among other things, that the spade in the hands of a man trained to use it is easier on the horse than even the common grazer or snaffle bits. It explains how to choose the right bit to get the most from your horse.