There are a number of websites giving advice about causes of fat shots. However, I am experiencing a very bizarre "bug" in my golf swing: I keep lifting my left knee so that I end up on my left toes at impact (with the majority of my weight on my right side). This is causing fat shots which are landing about 4 - 5 inches behind the ball.
It is easy to say "well, stop raising your left foot!" and indeed that would fix the problem. Unfortunately, it happens instinctively and I cannot control it. Perhaps this is just a symptom rather than the cause.
Can anyone give any drills for curing this jumping left foot of mine? A mental image or exercise to ensure correct weight transfer from right to left on the downswing would be good.