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Do you have a copy of the 6th Edition? If so, then you're in luck, because on page 32 Homer Kelley explains that the "Arc of Approach" is the Visual Equivalent of the Geometry of the "Angle of Approach", which is a "straight line through the Impact and Low Points".






"Low Point" is not a Location, it's an Alignment. The Alignment uses the basic geometry that's built into all Golf Clubs by All Manufacturers; "Neutral Hookface". The Shaft (Cog) moves On-Plane. The Target Line represents the Geometry of the Clubface (which is a re-alignment of the shaft). All Clubs have a Built-in Low Point. The Location of Low-Point forward or Aft of your Hinge Pin(s) is up to you. Your choice.

Low Point is the Intersection of the Clubhead Orbit with the Geometry of the Clubface (Target Line) that produces Straight-Away Ball Flight when the Shaft at 90 degrees to the Target Line. Neutral Hookface.

Straight-Away Ball Flight can be produced if the Ball is moved back on Orbit but not Forward of Low Point. When the Ball is moved back on the Orbit of the Clubhead, it rises above the ground. Then we Tilt the Plane (from the Plane Angle reference point) until the Ball returns to the Ground. Adjust the Hookface for Squareness at separation. The Steeper Plane Angle adjusts the Closing Ratio of the Right Forearm Angle of Approach which will "Sustain the Line of Compression" on the Plane of the "Basic Plane" of the chosen Hinge Action (Horizontal, Angled, Vertical). In "Laymans" terms, as the ball is moved back in your stance, it must also be moved "IN". This is all in the "Book", Chapter Two.

One must understand the "Right Forearm Angle of Approach". My up-coming Video's, hopefully available this Spring, will make TGM very easy to understand.

Im interested in Homers "straight away ball position" thats what I was looking for info on really. You draw a parallel between it and low point , making for a low point unique to each club. I don't think thats in the book . Did Homer discuss this somewhere else or is it from your personal think tank? Nothing wrong with the latter .... I got tons of that stuff myself. Don't share it very often but there's nothing wrong with a little thinking outside the box.

In regard to the above. I don't see the "Arc of Approach as a Visual Equivalent to the geometry of the Angle of Approach" as you say.

Id say you got two visual equivalents , one for the arc one for the straight line angle of approach procedure. Two club head blurs , one curved one straight line. From the players parallax perspective only . The "look" of the on plane club head path making for a useful visual reference. Two different procedures with entirely different geometry . One straight away plane , one closed plane for the hitters cross line hit. Two vastly different plane angles even.

As such the visual equivalents can not be drawn to show their curve or straight line nature from any perspective other than from the players. See 2-C-1 #3. You titled your drawing "Looking Down" but it doesn't appear to be looking down , players view , like Homers drawing. It looks more like its caddy view . Your drawing is neither 2-C-1 #2B nor 2-C-1 #3 Linear Force. Its not from the book.

The straight line Angle of Approach is not inscribed on the face of the plane in any of Homers drawings! I know of some drawings where it is but those are not Homers!! A well intentioned GSED but not Homer. I understand why this happens, Homer did have a certain way with words. Its so easy to mix things up. The straight line Angle of Approach can't be inscribed on the face of the plane. The straight line is a visual only. An illusion. The visual equivalent to a somewhat circular club head orbit ...which can be inscribed on the face of the plane. The club head can not travel in a straight line down the plane as the orbit is always circular , there are no flat spots possible (at speed anyways). I know Homers talks about "uncentered linear momentum" etc but thats not to be confused with a straight line club head path. I mean did Arnie have a flat spot? Put another way if you were to draw the Angle of Approach on the inclined plane .......it would not be a straight line any more. The straight line itself is the illusion. I know .....Im not doing any better with these words myself. We need drawings.

Homer has a similar looking drawing in 2-C-1 #2B but you will note that the straight line there is titled Angle of Attack not Angle of Approach a totally different deal.

Other than that I got nothing. I don't know if this effects the geometry you're discussing or not.. There's maybe been three people in the history of G.O.L.F. that understood the Angle of Approach. I know Im not one of them. But I have asked a lot of stupid questions to two of those guys. I wish Homer had drawn everything out . Everything. Straight away position , hinge action and ball flight law etc etc. I applaud your efforts to do it Daryl. Looking forward to your videos.