[jmessner]

I'm sure that all of the tools used in "Search for the perfect swing" were available to Homer.

The authors you quote explain their observations. I don't disagree with what they observed. However they fail to explain what causes the shaft to bend backwards. Additionally, they don't conclude what effect this has on impact. Third, they don't advocate this procedure. They have only observed it. In other words, they imply much, prove nothing. Please do me the favor of observing one more photo. Visit the section on this site named "Champions at Impact" and review Lee Trevino at impact. Then, in your own words, if you would kindly do so, explain your observations to me.

So Lee actually played the ball outside of his left foot with an iron? The picture is fuzzy, but to me this looks like a sand shot because part of his foot and the clubhead have been obscured and I would say he's already entered the sand. Great example of a flat left wrist with a 10-2-D.

BTW, some of the authors do discuss the lag situation during the swing - they are all good reads if you can get your hands on them.