[Par71]

I find it difficult to understand the drawings in chapter 2-C-4-A.

That's a reverse loft putter making impact on center, above center, and below center, respectively, right? The on center impact is said to produce no spin, the above center impact overspin, and the below center impact backspin.

Why did Homer choose a reverse loft putter for this drawing although it is almost impossible to find any reverse loft putters on the market?

For a regular (positive loft) putter to make above center impact like the one shown in the middle picture, should the putter shaft lean forward (to compensate for the positive putter loft)? Would that require that the ball be placed further back in the stance?

The bottom picture shows an impact below center with a backwards leaning shaft. So impact in the bottom picture must be past low point when the putter head is already rising again. Why would that not produce overspin?