SPF is the actual stroking motion denoting where your body/cue should be for each of its three locations. Instead of teaching the stroke in motion, I elect to teach the stroke in its non-motion (static) positions. This procedure allows my students a faster learning curve.
I share a belief with some very successful Billiard, Golf, Martial Arts or Dance Instructors on how they teach their trade.
The Meaning of SPF
SET: After all of the "warm up" strokes (I recommend 2-3), you bring your cue to its final rest at the cue ball for three purposes.
1. Am I ready?
2.Is that where I want to strike the cue ball?
3. Am I on target?
At this point, the only things moving are your eyes, not your cue. When all your answers are yes, you begin your final smooth (slow) backstroke.
Once your cue has reached it's proper backwards goal it must stop. The cue must Stop moving backwards before it can start the forward movement. This slight hesitation is termed a Pause. It is one of the major "Law of Physics”. All Players must pause; some just PAUSE longer than others.
Complete the forward motion of your cue to your Natural finish position (in doing so you naturally accelerate through the cue ball). This position is 4 to 6 inches past the cue ball location. This is the Finish position!
FREEZE and look at your tip for (direction and attitude) then check your grip hand to make sure it went home.
It originated from Cue tech, Check with RandyG
Hope this helps!