The Dowel has a Sweetspot (located at its tip). The Golf Club has a Sweetspot (located on the Clubface). Both should be pointed at the Straight Plane Line.
And except during Start Up and Release, the Dowel/Clubshaft is the On Plane Visual Equivalent of the Clubface Sweetspot's invisible Centrifugal Line of Pull.
Shanking is (1) a total loss of Clubhead Lag Pressure Feel and (2) the ability to deliver that 'Feel' Down Plane into the inside-aft quadrant of the Ball. But the Good News is ...
The same Pressure Point Pressure that will deliver a Dowel's Sweetspot into Impact On Plane will deliver a Clubhead's Sweetspot into Impact On Plane.
Not an expert, but this might help.
For me dowel is best used for alignment to trace the plane line esp. Basic and Acquired Motion. To avoid shanking, dowel with impact bag will be more useful for Full or Acquired Motion. When placed at ball position, at impact I look at my hand and make sure it's verticle to the plane( ground). (So when using the club, the club face,not the hosel, will come into impact)
Thanks for the clarifications and suggestions. I obviously have some more figuring out to do with respect to feeling and directing my lag pressure. I'm trying to learn swinging - it seems to be progressing although somewhat slowly - I've had a lot of incredible AHA moments but I'm sure there are many more to go.
I've been thinking about the sweetspot plane versus the shaft plane some more and came up with the following thought experiment:
Perform your normal swing with a golf club.
Now imagine that the clubface is stretched out horizontally more such that it looks more like a hockey stick - let's say one foot long. The sweet spot remains centered in the club face and is now much further away from you. The shaft length and lie angle stay the same. Imagine swinging this club.
Now imagine that the clubface is stretched even more such that it is stretched out to something crazy like fifteen feet long. Imagine swinging this club.
In your imaginary swings, did the motion and/or plane of the club shaft during the swing differ between the three clubs or was it the same? If it differed, how did it differ? I'd be interested in people's opinions on this (or if somebody can build the clubs and video that would be even better!).
Still don't see how anyone would not benifit from dowels.
I think its the best way to get the motions with speed.
But being not a full TGM guy I would like to here people explain if Im off based.
For and example this is how I into to many junior's how to develop speed and realase on the downswing.I find that kids get real hung up on the clubface and not the left arm(swinger models). With pitching its great for them to on shaft lean.
Anyway if anyone sees any thing that may work better let me know.