Ah! This link should explain it. I got it from another thread on the front page called "Head Behind The Ball". So go there if this doesn't work.

http://www.golf-tuition-online.com/v...ead.php?t=1485 (The Golf Ball Position - where to position the golf ball)

What you are describing is a variation of Method 1 but I don't understand why the instructor on television would tell you to keep it in the middle of the stance. However, not everyone has the same swing or instructs in the same way.