There are many keys to a powerful swing, and my number-one focus is to

establish a powerful backswing coil. Notice how my left arm is parallel

to the ground while the shaft is perpendicular to it. This position

indicates a massive turn away from the ball and not a simple lifting of

the club to the top (you can see my entire body stretching and

straining to get turned). The coil is further enhanced by my left foot,

which is firmly on the ground. This limits the amount I can turn my

hips while still allowing me to rotate my shoulders as much as

possible.