Method 1
With this method the ball position remains the same with every club. The ball is positioned opposite the inside of the left heel and the width of the feet is adjusted for every club.
With the shortest club the sand iron the feet are closest together out of all of the clubs, approximately waist width apart. As the clubs get longer the width of the feet increases very slightly until when you get to the woods the width of the feet is just slightly wider than shoulder width giving you a solid base from which to swing. Basically what you are doing by widening the feet and keeping the ball position the same is moving your center of gravity behind the ball creating shallower angle of attack on the ball, which is what you want for the longer clubs.
Method 2
With this method the width of the stance remains the same, just a bit wider than shoulder width. But unlike the other method the ball position in relation to your feet moves. From a sand iron (the shortest club in the bag up to a 7 Iron the ball position is opposite the middle of your feet.
As the clubs get longer from here the ball position moves slightly nearer to opposite the left heel approximately 1/4" each club.
As you can see in the Photo below the position of the ball with the wood is opposite the Left Heel, the same as Method 1 and as the Irons get shorter they move nearer the Middle of the Feet.
Photo 1


With both of these methods you will understand that the your body weight does not favor either the left or the right side but is distributed evenly 50-50. Although it may give the impression that with the ball nearer the left heel with a wood shot your weight is more on your right side, that is not the case. What you have actually done is moved your center of gravity further behind the ball thus enabling you a shallower angle of attack into the ball resulting in less backspin and more distance.