rsvman
First, I'm not advocating this method. I'm just passing along the info. The counter argument is this Dr. Wright has come up with a measurement and some of it is also a static (little movement) measurement and that tells you which category you fall into. There's YouTube videos of Dr. Wright showing these measurements.
Rinker's data shows most golfers fall into the upper core category. Meaning you most likely will benefit doing what Rinker says works best for upper core swingers with an early release / less rotated.
Most golfers release falls in a spectrum between early and mid. The late release / more rotated thru impact like Dustin Johnson are the smallest number.
He never says one is better than the other. He says the mid core has what people call the prettiest swing. But the best looking swing on video isn't necessarily the best swing if it doesn't work for you .
Also, if you fall in between you can pick one over the other. So, let's say you're a 6. You could use the recommendations for a mid core player or an upper core player.
Look, I give these guys credit who challenge the conventional wisdom that everyone should look like Adam Scott. The conventional swing has been a failure IMO. Sometimes it's a good thing to think out of the box.
In Rinker's case (he played on the PGA Tour) he tried the cookie cutter conventional wisdom swing trying to get a late release / more rotated thru impact and he struggled.
I've always believed a teacher should look at your swing and have the knowledge to come up with recommendations that would work the best for each individual.
Let me take the early release issue most hackers (including myself) have. Your release is inherent in your swing DNA. It's extremely difficult to change it. If you ask a golfer with a natural later release and ask them how they do it they won't be able to tell you.
They're not intentionally holding any angles or anything they can pass on. They do it naturally. They may have a feel, but as we know feel is very much an individual thing.
Anyway, that's the counter argument. ☺