During the setup phase of the golf swing, the legs should be shoulder width apart, slightly flexed, and have the bodyweight balanced 50-50 between the toes and heels, as well as 50-50 between the left foot and the right foot.
As the shoulders rotate during the backswing phase, the legs should work hard to resist the shoulder rotation. The bodyweight should be shifted to be in-step of the rear leg and the rear knee should remain flexed. The front knee will flex and move towards the rear knee. This movement should be minimal and resisted if possible.
As the swing changes from backswing to downswing, the legs can start to drive forwards towards the target, releasing their stored up power from the backswing. The rear heel should begin to lift before the club reaches the impact position and the hips will start to unwind to face towards the target. The front leg should remain stable, and if a golfer is athletic enough, the front leg should be locked through the impact phase.
In the finish position:
As the club is swung to the finish position, 95% of the golfer’s bodyweight should be positioned over the front foot which should have remained flat on the ground and balanced the whole way through the golf swing. The rear foot should have rotated up on to the tip toe and should now be very light. A golfer should be able to hold this balanced position until the golf ball lands.