How should we bend the shaft?

[O.B.Left]

If we are Hitting? Swinging? Snap vs sweep release?

Here is an interesting article by the good folks at Harrison. Can we add anything to it in terms of stressing the aft of the shaft vs the top of the shaft? What do we make of shaft lead vis vis our quest for Lag in a TGM sense.

http://www.harrison.com/shaft_lead-lag.htm