I'd be interested in seeing a video clip of Mac with a stright rt. leg at the top. He is so low and flexed at address, it would be a huge shift upward. Huge. Unless we are speaking of a different swing model than the one is famous or infamous for. Or unless he is playing left handed so the straight rt. leg is now his forward leg!
I've spoken with Mac, watched him play, and videotaped him. Never comes close to a straight rt. leg playing rt. handed.
But, show the clip if you've got it.
Brian, I'm honest enough to say the pic above shows Hogan with what seems to be a relatively straight leg. However, appearances can be deceiving. His true leg flex is hidden by his pants. Hogan sometimes played with less knee flex at address than at other times. He tried not to straighten it anymore than what he started with. His own words, cited in a prior post, contradict your claims.
IMHO, you are not being honest in commenting on the link I posted which shows Hogan at the top with a lot of flex. Why are you ignoring this? Obviously because it contradicts your theory. You are also avoiding a lot of other footage showing retention of his leg flex. You have not addressed the valid "pants phenomenon" anyone can observe by watching how the pants tends to straighten as the hips are turned even though leg flex stays the same and is hidden unless one has X-ray vision.
To address your remark, how you get a decent amount of hip turn, take a look at Hogan's hip turn and flexed rt. knee
in "Pursuit of Perfection". Yes, Hogan "really bent his left knee".
You have done a good job of position analysis except for this and your unwillingness to admit your error is not helping innocent students
who trust you. You also haven't penetrated into what Hogan really did to achieve those positions. And that is the only way anyone will be able to approach Hogan's swing with any realistic hope of benefiting from his/her efforts.
Position analysis is all the rage in the golf magazines. It's fine...but by itself is insufficient to recreate a swing. Good golf swings create good positions, not vice versa.