For good static balance, I suggest feeling your body weight is 50/50 back to front (heel to toe), and 50/50 side to side (front foot to back foot). Assuming you have a correct spine angle at address, your weight back to front will tend to favor the balls of your feet-which is why you need not over emphasize this sensation. Conversely, if you over emphasize weight on your heels, you may lose your spine angle, and this will throw you out of balance to the rear. Watch video...