You said "Like Mac"....but to my knowledge he has never made claims in public, or written, and if he has that you know of I would love to read it.
Now to my knowledge the only way to directly learn anything he teaches is to attend a clinic in person. I think you can get good information from teachers who have attended many clinics but again there is going to be interpretation of his words and the picture gets muddled. If we want to talk in generalities I think thats about as far as you can go, stuff like steep shoulder turn, swing left of the ball target line, knee flexes, pressure points under arms, stuff like that.
Well that would be in public " a clinic" that you can attend, unless he won't say anything at the clinic and everyone has to guess what his concepts are. He has made a claim in public just by having clinics that teach his concepts to others, that is a statement, by his actions and words at a clinic telling others what his concepts are to be taught.