Although difficult to describe, the words that may best describe the all-important first movements of the downswing and subsequent lower body action of the most efficient and powerful Golfswing are:
Buckle the left knee toward the target as the right knee remains in its top-of-the-backswing position, not following the lead of the left knee. The right leg will be bent at the knee and never is it allowed to lock at the top of the backswing, nor is it allowed to buckle in any direction. It remains bent but static.
Almost immediately after the left knee has buckled toward the target, there follows noticeably a definite sitting action in both knees which allows the players body weight to drop, thus creating a major source of Golfswing power. When the first left-knee-buckle action occurs, the player will have a bowlegged, awkward appearance that may be caught only by fast cameras and not the naked eye.
Personally, I place a volleyball between the knees of the student-golfer, and then have the player practice buckling the left knee and dropping the volley ball for several hours before attempting to incorporate this move into the total motion of the GOlfswing. It is best if the student folds his arms behind his back as he works on just this simple, but important, little movement until he has repeated this sufficient times for it to be kinesthetic feed-back.
After the buckle-sit-slide of the knees toward the target has been mastered, then the chorus girl bump finalizes the ideal, most powerful and perfect tempo and proper sequential movement lower body action. The proper lower body "Bump" will find the pubic area pointing toward 2 o'clock if one were standing on the face of a clock, with 6 o'clock being the tee and 12 o'clock being the target. Only the very strong can develop sufficient power without the added "Bump". So for most of us it is:
It is possible that a golfer may be a successful player using a swooping sitting action in both knees as the work together toward the target, but if this same player had been using the left-knee-buckle method, there is evidence to believe that he would have been an even better player. By achieving a greater stability of the platform a little longer with the left-knee-buckle method, the chances are his consistenct factor and the longevity of his career would be extended.