Putting low point

[dkerby]

Pg 74, Transfer Power, the swinger can use a "Reverse Loft"
putter for a precision "low point" impact - really a very
accurate and simple procedure.

Pg 22, the only picture for a "Reverse Loft" putt is for
above center inpact overspin. In the picture the putter
shaft is leaning forward.

My question is: Would one have to construct a putter with
reverse loft to have a precision low point impact? Looking
a the law of flail, I would think that the putter must reach
the bottom of the arc to be at low point. The handle and the
the putter head would have to be in line vertical to reach
low point. This does not seem to be case if the shaft is
leaning forward.