LOL. That leaves none.balls squirt shafts deflect so squirt is not a cue characteristic..
I think there might be something to that (the vibrations might determine how much of the shaft's length is "involved" in the "end mass")....I speculate that the pivot point is related to sine wave reverberation aka hit.
Notice that we're still talking about squirt/deflection. Where are the other performance characteristics?
I'm sure it's possible to manipulate the vibrational qualities of the cue, but it's still speculation that it has anything to do with the pivot point and if so I'll bet it's a small effect. Anyway, it would be interesting to measure cues' vibrations along with their end masses and pivot points.I believe it is possible to manipulate that point to an extent utilizing taper and wood quality..
pj
chgo