Gary--I worked this morning using the Randy Haag method. Right foot forward using the Wonder Putter 42" length. In general, I find this the best way so far of using face-on/sidesaddle. Two reasons, I find the longer length easier to wield. I am 6'. At that length I am over the ball but not stooped over (feel much more bent over using Smart Putter) easy on back. Second, top hand is gripping top of putter with thumb and index finger only holding the butt of putter as still as possible per Randy and bottom hand is using pencil type grip with right elbow right down the line.
Whatever sidesaddle/face-on method you choose you do need to replicate it as any golf stroke. Then, practice comes in and I am a decent practicer but it takes a lot of time.