My favorite training aid/accessory is the Perfect Swing Tempo Program from BobbySteiner.com. You see, I call tempo and timing the invisible fundamentals because there are no pictures of it in magazine articles or books. But, like a Lotus race car, everything can be perfect, but if the timing is off, not only will it not perform, but the engine can be damaged! In addition to building one’s tempo, it can be a valuable aid to free the mind of unhelpful swing thoughts. I recently got into a bout of the shanks, and after identifying the source and correcting it, the thought, “Just don’t shank it” lingered in my mind as I stood over the ball. By putting the mind to work on something else, the tempo trainer helps eliminate the negative thoughts.