[Daryl]

I see the Hogan arch at impact as a product of his shaft lean combined with his left hand grip type......weak. Its also a "never gunna pull or draw, never go'n left, no sir" clubface management thing.

I say that his Arched Left Wrist at Release allows his shaft to lean with His Weak Grip, and his weak grip, Vertical at Impact, slows the rate of Closing and Layback making a Hook or Draw almost impossible.

No doubt in my mind that Hogan used a Simultaneous release as a standard although he sequenced his release occasionally. He was versatile.