I strongly recommend to all my students they use the overlap grip, where the pinky of the right hand hooks just underneath the left index finger. It should never rest on top the left index finger, but instead, should lightly hook in between the first two fingers of the left hand. The right index finger, together with the right thumb, form a critical connection to the leading edge of the clubface. The clubhead travels in an arc at 80-100 mph, too fast for a human to possibly know where the clubface is aligned at impact. Yet with the hands travelling only 20 mph, a golfer with a well-constructed right index finger trigger assembly can develop have a strong sense of his clubface alignment at impact.
To begin, take the first bone of the right forefinger and line it up so that it is straight with the connecting bone interior to the hand. These two joints must not only be aligned perfectly straight, but they must also sit vertical, so that the two joints form a coordinated trigger just that sits directly behind the grip in a 3 o’clock position. These two perfectly aligned joints form the right side of what I refer to as the "Rectangle."
- The left side of the Rectangle is formed by the right thumb. The right thumb is best pointed to 11:00 o’clock to allow room for the two joints on the other side to form their straight line.
- The two "smaller" sides of the Rectangle are somewhat imaginary. The upper portion is formed by the middle joint of the right forefinger. The lower portion is formed by an imaginary section of the hand that connects the biggest joint at the top the right thumb with the muscle that lies just to the right.
- Forming the Rectangle is critical to playing good golf. You will notice it in the grips of all good ball strikers.
Properly aligning the two joints of the right forefinger not only helps the right wrist to bend optimally, it also maintains the right wrist bend well into and through impact. This puts the right hand (the dominant hand for a right-handed player) in charge of the pace and timing of the proper release of the wrists through impact. A right hand that forms a "doughnut" instead of a Rectangle will be unable to maintain its bend into impact and lead to a "dumpout" of the club toward the ground prior to impact.
Maintaining the right wrist bend into impact holds two key benefits: (1) it creates faster cluhead speed at impact, and (2) a lower vertical launch angle, both of which produce longer shots.
The clubhead moves at 80-110 mph, which is much too fast for the human mind to have any idea of where the leading edge of the clubface is at any given point in the swing. The two perfectly aligned joints of the right forefinger, aka the right side of the Rectangle, is the golfer’s link to the clubface. It provides a strong sense of where the clubhead is in relation to your hands, particularly at impact.