Sterel Thompson on horse at Kent. "It [the bridle arrangement] is generally known as a hackamore, and most frequently used to start young horses. It obviously does not use a bit in the horse's mouth, and therefore protects sensitive tissues from abuse. Also could be used for horses with some form of existing sensitivty. Usually a transition was made to a bridle with a bit. The California vaquero tradition used this process to patiently produce a...