What I have come to call the “triple tree trainer” is simply using a three abreast hitch to bring mules along slow and deliberate to train them to pull triple, double and single. I am certain that I am not the first to use this device as a training method. I first saw a tongue designed similar to this hooked to a restored fire engine at the Mule Day’s parade in California. It was then, as I studied the hitch, it occurred to me that it would be very useful in helping me overcome some difficulties in training mules to the tongue and to shafts.