There is a difference between clubhead lag, and true lag 'pressure'.
Brian's shopping cart image is the best way to describe the difference. (see article on his site).
In a nutshell, if you ran downhill pushing a shopping cart, lag 'pressure' is maintained by continuing to run faster than the cart - you are still providing a push - providing support.
Now, you could run with the cart, and keep up with it, but not be ADDING any pressure - it would look like you are pushing it, but really you are just 'moving at the same pace'.
Don't confuse clubhead lag (moving at the same pace, keeping that clubhead trailing) - with lag pressure (adding 'push' - adding support).
In other words, if you can't keep up the speed to 'push the cart', you are going TOO FAST.
Remember - slow and heavy, feel PP#3
As soon as you give up lag pressure, you give up mass - you are 'bouncing' the club off impact, rather than 'supporting'.
This is true, hitting or swinging IMO, although you will feel it more directly in hitting.
Good post. Ok, futher exploring this....
Are you saying then, a clubhead moving at 100mph with no support behind it will not hit the ball as far as a clubhead traveling 100mph with support behind it? Support being - the club attached to a golfer who is maintaining lag pressure thoughout the swing.
i would say that if you are running faster than the cart and pushing it then you are accelerating the cart, if you are just keeping up with it you are not...same with the 100 mph clubhead, if you are pushing it to 100 mph, then you are still accelerating it, not just keeping up with it and it is the acceleration that is your "effective mass" and would cause the ball to go further
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