[tongzilla]

I would have thought this was the other way around - the clubhead actually covers the angle of approach, not visually covers it (although as the clubhead gets closer and closer to the ground it would get closer and closer to visually covering it as well). Why do I think this? Because the location of our eyes isn't part of the geometry of the stroke - if my neck grew 20 feet then visually covering the angle of approach would change the geometry (the length of my neck would affect the geometry of the stroke). But then I take your point about the plane having to be verticle if the plane is really closed - so perhaps it neither visually nor vertically covers the line (exactly) with 10-5-E. With an angle of approach procedure and a plane line that was square, it would actually (vertically) cover the angle of approach though, wouldn't it?

Chris

• The Angle of Approach procedure requires a Closed Plane Line per 10-5-E. Hence you are not using an Angle of Approach procedure if your Plane Line is Square (10-5-A), even though you are tracing the Angle of Approach that is inscribed on the Inclined Plane.
  
  
• The Angle of Approach, Arc of Approach and the Straight Plane Line are all inscribed on the face of the Inclined Plane, whether it is Open, Square or Closed. Hence if your club is On Plane, you will be Tracing all of these lines.
  
  
• For the new Closed Plane Line, which was the Angle of Approach of the old Basic Geometric Plane Line, there will also be an Angle of Approach Line inscribed on this new Inclined Plane. However, there is no Angle of Approach to an Angle of Approach procedure (so you will not be using this new Angle of Approach as your Delivery Line).
  
  
• The Angle of Approach of your old Plane Line now becomes the basic Plane Line with the Angle of Approach procedure. Every stroke must have a Straight Plane Line. This Angle of Approach Delivery Line is automatically traced if the Club is On Plane.
  
  
• It is necessary to have a steeper Plane Angle when using the Angle of Approach procedure. This complements the visual covering by the Clubhead of the Angle of Approach.