Go to any golf school and you will find a wide array of training aids to help improve your golf game. You may see devices to keep you on plane, others that work on tempo, computer simulators & swing analyzers, impact bags, molded grips, alignment guides, putting guides, mirrors, etc. This list is never ending and can go on and on. Once you leave the practice area you can move to the fitness center and find even more aids that will help improve your "golf specific" muscles, flexibility, and balance. After you fix your swing on the range and improve your strength, flexibility, and balance in the gym, you can pick up the books that work on the mental side of the game. Whatever particular facet of the game you feel you need to work on there is some type of training aid there to help you.
Training aids are certainly a valuable tool that every golf professional has undoubtedly utilized at one point or another during a golf lesson. Used properly they can enhance what almost every golfer gets out of their lesson time. Despite their importance, I have yet to use any of these things in the most important golf instruction I do every week. Instead the "training" aids we see during our golf clinics at Ranken Jordan include wheelchairs, hospital beds, casts, pulse-ox machines, ventilators, braces, gait belts, walkers, canes, crutches, and more. Sometimes our junior golfers need only one or two of these items to allow them to play golf. Other times they need 3, 4, 5, or more of these all too important "training" aids. While these may not be traditional "training" aids, they are even more significant to the learning process for these junior golfers.