I cannot supply scientific data on the old fashioned knee action. I have only anecdotal support for it.
In my own game focusing on pressure shift in the feet is not a feel that's effective. Last time out I was not at my best and part of it was focusing on my legs for maybe ten holes probably due in part to this thread. I was beat down hard by the golfing gods. They even took away my putting also but threw in good chipping to further screw with me haha!
Sadly, I can only admit I am not as athletic as those golfers with that hyperactive left knee. It's my theory that this active knee motion contributed something to their action, perhaps helping their sequencing or power or possibly protecting the spine, but I can't put forth a good argument based on solid evidence. The shots of Nicklaus above are fascinating. It's hard to believe they did that with that unforgiving equipment.
Photos like the ones of Nicklaus and Wright are just amazing to me to look at. How the heck were they able to be so dynamic looking and still crush a tiny headed persimmon driver with a tiny sweet spot/clubface? It truly boggles my mind.
It's now 8 months since I started playing golf. I'm fairly happy with the progress I've made so far...
...I've (mostly) got past the impulse to try and whack the ball really hard
...I've (mostly) learned not to overswing and start standing up in the backswing
...I get the concept of the hips starting the downswing rather than the arms, and can see how this causes the club head to rocket through at the bottom of the swing AND I seem to end in a good finish position
...that said, I have also learnt to move my hips at a moderate pace rather than too fast, as that was making me slice it - confused me for a bit but I get it now
...fat shots are now a rarity rather than a constant plague - tend to now only occur on uneven lies but not too often
...I'm not yet as consistent as I would like to be, but I hit the ball cleanish and straight most of the time
...chipping and putting is reasonable compared with my playing partners
...I would expect to get 4 or 5 pars in a round, and mentally before each hole I tell myself a bogey is ok so better to be short of the green with a controlled swing than in trouble with a wild one. A double bogey or worse is now a disappointment however.
I am also starting to get a reasonably good idea of my distances for each club. What I have noticed, however, is that my distances are much shorter than my friends. I can hit straight drives about 210 yards, a straight 4 iron about 150 yards, a 7 iron about 120 yards. Now, I'm ok with this, I'm not bothered about outdriving them or being a big hitter - I know that trying to match them club for club will not end well for me.
My question is, will my distances increase as my swing develops and gets more consistent? Looking at some of the swing speed charts online - for what they're worth - maybe my driver swing speed is around 80mph for those distances? My irons are Callaway X-16 with new Dynamic Gold R300 shafts. Are these a heavier shaft, and would I see an improvement with different shafts? I've no intention of changing them just now, but have my 40th birthday next year so a new set might be on the cards then.
I'm really enjoying my golf at the moment, and am quite content with my progress, but the desire to improve is very strong - I guess this happens to a lot of new golfers. How might I expect things to go from here on? I've been working it out by myself and with the help of YouTube videos and books, and lessons are not an option - the nearest pro is two hours away.