A ball sitting in a cupped tee v a bull sitting on a smooth green - Sven: are you saying more force is required to move a ball off the green? Seems intuitively like that wouldn't be the case - but can't say for sure...
Either way, I would have thought a vaguely predictable pass at the ball would be wholly impossible under either circumstance. Would be fun for a few holes for sure - would start to get old long before the 18th though...
Brian:
I made no comments touching on physics (other than agreeing with David Ober).
The point I was making is that on the tee you always have the option to not use a tee. It would require a massive wind to move a ball sitting on tee length grass. But on the green, severe wind can decisively interfere with play. If it is impossible to replace a ball on the spot it has been marked, it is impossible for the player to play within the rules.
I was thinking of Poulter in particular, who on camera made a statement regarding the potential of injury if a ball on the tee were to move. There is nothing in the rules that entitles the player to start a hole using a tee. If Poulter thinks the ball might move and he might be injured, he has the option to forego the tee and play off the deck.
Sven