Bill Crane,
The biggest short coming in analyzing greens is the inability of the camera to clearly define contour and slope.
Some day, some one will perfect a method that depicts what the eye sees.
There are probably computer programs that can graph elevation changes (contour & slope) down to half and inch, but, it's not the same as a clear photo.
There's a course that I've been visiting/playing for over 60 years and some of the bunkers are right up against the green, yet, there's no evidence of sand splash altering the putting surface in terms of contour and slope.
How many times a day do golfers have their ball land in the same spot in a bunker, a spot where sand splash will fall on a green ?
And, with daily mowing, wind, rain, irrigation and foot traffic how would it be possible for the contour/slope of a green to change ?
If greens don't change their contours/slopes with top dressing, why would we expect greens to change their contour/slope with sand splash, which is so random and often doesn't reach the green ?