[O.B.Left]

It sure about all that but I wil hang my hat on this fact, a hitter uses the angle of approach an arc of approach is for swingers only these are visual equivalents

Typically yes but not necessarily given what Homer said in the GSEM classes. Hitters can use the Arc of the Angle , swingers are pretty much confined to the Arc . The Angle requires so much manipulation that pivot power is detrimental as it produces CF which promotes shaft plane compliance rather than club head only plane travel. So if you're a hitter with some pivot power which most of them are , you're probably gonna plane your shaft .And if youre shaft rides a Plane you will see a curved blur unless you can somehow achieve the eye plane ....