[12 piece bucket]

Yes of course. Forgive me, I was forgetting that the practice swing is part of Address. One other reference to blur does concern me though. It is in the last paragraph of 8-0 : "Then be sure you actually see the proper Blur of the Clubhead passage through Release." (6th Edition)

Could you explain what is the "proper" (or improper) blur?

TIA

Good question . . . it is very much about Visual Equivalents which used to be Plane Line Equivalents for the old schoolers. This is one section in the book where several elements from the earlier editions did "make the traveling squad." But I think there is much to be learned particularly in the 5th Edition with regards to your question.

So it all starts with the Magic of the Right Forearm. So before you can truly understand my answer and I think THE answer to this question, you must understand the alignment of the Right Forearm Flying Wedge. Do you got that? Do you understand that at Impact and at Fix at the very least the Right Forearm and Clubshaft MUST BE IN THE SAME PLANE TO HAVE THE PROPER STRUCTURE AND ALIGNMENT OF THE RIGH FOREARM FLYING WEDGE. Check out a javelin thrower . . . you'll see the wedge just "upside-down" and on a verical plane. So get that FIRST.

Now for the Plane Line . . . the Plane Line is just a straight line right? Typically coinciding with your target line but not always. So does the "curved blur" have reference to the Plane Line, YES IT DO. If you trace the Plane Line it does. Why because the club moves in a "circular" fashion.

Ok . . . let's go a bit deeper. What in the heck does the right forearm have to do with all this? A bunch. Remember all Stroke Geometry deals with the GEOMETRY OF IMPACT. So since we are get an "impact fix" like a crackhead at Impact Fix. Our Right Forearm is what? In the plane of the Clubshaft?

So . . . when you are at Fix where does your On Plane Right Forearm Point? Well down the Plane Line right? If you extended a dowel down the length of your Right Forearm you have just established the Right Forearm Angle of Approach.

Now to connect the dots on the Right Forearm Angle of Approach and the "curved blur." At Fix look at your forearm and where it is pointing. Next imagine a line on the ground PARALLEL TO THE LINE OF YOUR ON PLANE RIGHT FOREARM through the ball. That imaginary line is an approximation of the ANGLE OF APPROACH DELIVERY LINE OF THE CLUBHEAD . . . which is the LINE CONNECTING IMPACT AND LOW POINT.

So what? There is also an ARC OF APPROACH which just an ARC connecting the Impact Point and Low Point. And that my friend is your "curved blur." And so just imagine an ARC on the ground just on the outside of the imaginary line throught the ball that it is parallel to your Right Forearm Angle of Approach.