[KevCarter]

Perhaps, for personal application, but all hinge actions can be equally as accurate, however only dual horizontal produces, maximum deformation of the golf ball, and for true swingers is naturally produced, thus you dont have to manipulate anything.

Whip, I obviously agree with your second point, and I think the first point is a little more player/pattern dependent. I fancy myself as a hitter using Horizontal Hinging, and that probably isn't optimal, but it's what I got, where Mr. Kelley explains that HH is optimal for a swinger.

Please see my signature.

Kevin