Jim,
Unless you believe that those elevated plateaus were exactly as they were found, yes, there was some shaping going on at TOC. Shaping is any change to the ground to modify it for golf, with major ones calling for major earthmoving before shaping begins. I think TOC did have some rudimentary shaping, but not to the degree that most modern courses have now.
As to site visits, I agree with Gary K. A few days a week, well timed, usually gets the job done, esp. if LUI has a couple of shapers on the job, and I can spend the day bouncing back and forth between a couple of different work areas to finalize both, or all.
Its always interesting working with shapers. They have seen a lot of styles. Sometimes, they push for different ideas, and sometimes they are better than mine, if I have "brain freeze" on a particular day. Other times, they don't consider design balance as I have, or the style they have in mind for one green is too different from my idea, or the other greens on the course. They have egos, too, so its always a good idea to work in some of their ideas early to keep them on your side, but I usually am fairly forceful in designing to my visions, unless their idea IS clearly better.
Like Lester, my contracts usually call for a number of days on site, but I usually exceed them greatly. I recall having 64 hotel nights at the Quarry from expense records, for instance, which might work out to over 90 days, given I would get there and spend 1/2 days before sleeping in that hotel bed.
No question that courses go from good to great with more field visits, no matter who the gca is.