I guess you don't want to respond to my posts. (maybe I wrote too much...?)
That's ok tho.
...
Annikan...
Never been to one of those labs. (man you've done your homework eh....crazy science stuff comin out from all over the place
)
Anyhow...
I think a base of neck pivot centre is very valuable for teaching people to pivot (so they don't reverse pivot)...and obviously not only that....but also for playing to a high level of precision. (and power) For some people.
But a head pivot centre works well too- for some people...for some shots. I don't know tho...if it's as valuable for teaching slicers....? I also feel it can be dynamic (obviosuly...look at Freddie Couples)...but not as dynamic....(less likely to see any very very long hitters or long drive guys using it anytime soon)
I'm gonna try to bow out of this one on that....(prolly will be back tho)