[O.B.Left]

Does that mean that a Swinger should adjust his clubface to the selected Hinge Action at Address by rotating his Plane Line? And that, for Horizontal Hinging, his Plane Line would have to be more open for longer shots and less open for shorter shots?

Great answer Mike. Par 71, you need to note that HOmer isnt talking about Swingers , generally. He is talking about True Swingers . Those for whom CF alone squares the club face.

Hitters and manipulated Hands Swingers (almost everybody) can make use of Grip Rotation. That is to say for balls played fore or aft of the Straight Away Position, they can rotate the handle in their loosened grip to align the face square to the target line/ plane line (for instance) and then when swinging have the club face return to the ball with the same face angle.

Grip Rotation is not available to the True Swinger , definitionally. A ball played back of straight away will see an open clubface returned to the ball . Pushes and Fades resulting . So under these circumstances if this player , a true swinger wants to re direct the flight of the ball so its not out to the right, he can do so only by rotating his plane .... to the left.

So, re your question above Par 71, Plane LIne Rotation for the True Swinger has more to do with the positioning of the ball than what club is in hand. And while the True Swinger will have a face angle which is open to varying degrees at Fix , to allow for it to be square at separation , this is got via ball positioning through trial and error not plane line rotation.

Re face angle at Fix given a selected Hinge Action and Grip Rotation, here's a mechanical /mental image for the Manipulated Swinger, Hitter golfer playing a ball back in the stance. Imagine the golfer as a machine:

1. You program in a hinge action. Once programmed the Hands always swing through in the same manner. The hands are just clamps etc.

2. Assume you have taken your grip at Fix for a ball played at the straight away position .... You then move the ball back in the stance and with it the left arm and club back .... The club face will now point to the right somewhat! Should point to the right . Your left hand, in fact your entire Primary Lever , left arm and club, has Turned slightly as it moved back in the stance with the ball and in accordance to a Left Hand which remained Vertical (flat level and vertical) to the desired Horizontal Basic Plane given Horizontal Hinging.

3. You then loosen your clamps (hands) and Rotate the Grip ... ie you spin the handle counter clockwise in your loosened grip /clamps to square the face to the desired Fix alignment for straight away initial flight down the (Impact) Plane Line / target line.

What is the desired amount of face squaring? It depends on the club , the ball position etc but the point is that the face must be square to the target line at Separation reasoned Homer not necessarily at Impact. The closing nature of Horizontal requires the face to be open (to varying degrees) at impact fix. Its not separation Fix its Impact Fix after all. Vertical Hinging would have the same as face angle at impact and separation .

Any notes Mike? This stuff sounds horribly complex in words. If we were all standing around in the same grill room with some sticks in front us it'd be way easier to describe.