Clueless fans? I didn't hear a single "you da man".
I'll not soon forget the first time "You da man" was heard at the Open Championship.
I vaguely remember that it was Fred Couples driving a ball, and a fan called out: "You da man!"
The estimable Peter Alliss said something very much like: "Oh, dear. They caught one of those cheap flights across."
This past weekend, I did note hearing one fan who called out "In the hole!" as Tiger hit an iron off the tee of some longer-than-400-yard hole.
Of course, maybe it was just a display of that famous dwry British humor.