[Yoda]

To the best of my knowledge, only PP#3 can be artifically loaded to any advantage, and thats for short shots only.

What Bagger is talking about here is gripping the Club with a tight Right Forefinger (6-B-1-D). This 'artificial Lag Pressure' is very useful in Strokes where there is too little Acceleration Time (length of Stroke) or too gradual an Acceleration Rate (Lag Pressure) to develop an adequate 'Clubhead Feel.' The player then substitutes the tight Right Forefinger Pressure for the normal Clubhead Lag Pressure to direct the Sweetspot On Plane through Impact.

Interestingly, Byron Nelson, in his 1946 classic Winning Golf, recommended the tight Right Forefinger on all Shots. Whether he applied that Pressure deliberately (during the Address Routine) or merely sensed it being applied (during the Downstroke by the Clubhead Lag) is a question only he could answer.