Bill,
I have said this before, but Donald Ross is overcredited for the visual deception thing. That dissapearing ground in front of many greens was soley a result of his desire to find some fill close by, at least if you read the notes on his green plans.
Back on a good topic, I believe fw contours that affect your shot are usually unnoticed by golfers who figure it will hold their shot no matter what.
Included in this would be domed fw, cross slopes steep enough to make you favor the high side or even rough, and hammerheads or other smaller ridges that might stop roll in one area or deflect shots to the wrong side of the fw. But, there are others.
I'm sure there are but I won't be discussing them today!
