Homer Kelley Putted with an extended Left Arm and a Flat Left Wrist (Impact Fix Address Position). He saw "no reason to return to the Adjusted Address Position" (Bent Left Wrist).
He then located the Ball in his Stance so as to achieve an 'Above Center' Impact and thus a 'true Roll' (Overspin) immediately upon separation. [Note: This is NOT 'hitting up' on the Ball!] That location will be precisely at Low Point with a Reverse Loft Putter and just behind Low Point for a No-Loft or Loft Putter. How much behind Low Point? Far enough back to insure a Negative Loft ('Overspin') Impact -- and therefore not Zero Loft (No Spin or Skid) or Loft (Backspin or Lift) -- but not so far as to cause the Ball to be driven into the ground.
I am trying to figure out the ideal loft for my putter. It currently has 3 degrees (which I suspect is insufficient.) I address it with impact hands and a slightly forward leaning shaft, so I am sure my dynamic loft is less than 3 degrees. I play on an assortment of greens, mostly good quality bent, that they never shave (Oklahoma summers can be brutal!) Cameron and Maltby suggest that 4 degrees at impact is what is needed to lift the ball out of the slight depression it sits in when at rest.
So...how does the true roll technique that Homer (and seemingly every great putter) utilized square with the 4 degrees of loft neccessary to lift the ball out of the depression it sits in? Above center with 4 degrees of loft achieves the same true roll?