[Doug]

What is the recommended position of the ball when utilizing this technique? Also, is there a recommendation for the positioning of the feet? In other words, does one set up in the traditional method with the feet close together and open and the ball toward the back?

The shot seems to work best with zero pivot.

You need to get your body into position so your right forearm and elbow won't run into your right side.

I stand slightly open for level shots.

Here is something to try that came from a Lee Trevino tape.
From a steep down hill lie, try a closed stance. It gives your elbow and forearm plenty of room.