[BerntR]

Well thought Daryl. The two frameworks seem somewhat differnt to me, but not mutually exclusive. I think the biggest difference is that TGM is more clear about what happens during the impact interval (hinge action) while Joergensen's D-plane is a more explicit and systematic and perhaps more accurate description of what TGM says about D-plane-ish character of the ball flight.

Not quite sure about this though:

If we view this situation using "Compression" theory, we might say that the amount of grass between the Clubface and Ball caused the Clubface to lose contact with the Impact Point before separation, which caused a loss of spin producing compression. We would also claim that the ball flight will be a little right of target for the same reason.

How do you see it loose contact with the impact point? By rolling up the club face?

I have a driver that is cryo treated or something. Very hard surface that I can still use as a mirror after 5+ years of use. It's by far the best driver I've ever used. But I can't use it in rainy weather. If both the ball and the club face isn't dry I get very little back spin, only 50-60% of normal carry and a sometimes a weird ball flight.

This must be due to hydro planing or some other mechanical condition that reduces the friction significantly. I'm thinking the former. But this shouldn't affect the quality of compression as far as I can see. And it doesn't feel like it does so either. I am guessing a glancing impact with good ball compression here. But that's only a guess.