In the case of the right knee straightening. At least you agree with that it should. Also don't quote Ben Hogan. Here is the thing about Ben Hogan, what he was describing what "HE DID". Not what you can do, or I can do, or any other amateur can do, but only what "HE DID" in his golf swing. It is a feel that worked for him. It might work for someone else, but it is not a general "what happens" with everyone.
Thanks @saevel25 you saved me a lot of typing.
@Jack Player, Hogan's books and writing were about what he FELT like he did. He also said you "bump" the hips on the downswing and then rotate/turn them, yet Hogan slid his hips a TON. What felt like a tiny "bump" to him was anything but.
Also, @Jack Player, I won't be so rude as to say that people having a discussion "cheeses" me off - it doesn't - but it's disappointing when someone comes on and starts arguing without even knowing what's being said, and with their only real backup being what a player SAYS they FELT they were doing in their golf swing.
I have a question for you, then, since you say you should never teach the student to extend the right knee at all: what do you do with a guy who doesn't extend his right knee quite enough? It's not happening automatically for him? Do you just say "well, sir, you are a factory reject - it is supposed to happen automatically because Ben Hogan said so, and you are not doing it, thus you are faulty and unfixable?"
Both of these golfers needed to understand what some extension of the right knee could do for their swing:
Some golfers are "factory rejects" because they extend too early, too much, or both, and not because it happens "automatically."
(He had another issue with the way he loaded his arms and the wrists, of course, but focus on the belly button down).
Shoulders do not pull the hips. The hips pull the hips. If a golfer can get to that position with just feeling shoulder turn good job. Some people might feel their hips going back and up, or a stretch in the lower right back. Some might need to feel the knee moving. Does this mean that it is out of sequence, NO. Feeling something move means nothing in the order of which they do move.
Exactly. Feels are different for everyone.
P.S. I see the URL in your email address, @Jack Player, and we have a vigilant membership who will report any signs of spamming. I'm sure it won't come to that, though, and your email address is just something else you do.