Tom,
I was talking about Sand Valley which a GCA poster lamented a certain course owners competition. Of course not all are close to equal, but I'm sure Mikes finalist were. Just like all owners aren't equal.
No one has yet answered if they radicly change routing in the field?
As the saying goes, some are more equal than others
As for changing a routing in the field, I've done so fairly often, sometimes radically and sometimes less so. I guess it depends on your level of comfort. For Pacific Dunes, between the final walk-through when Mr. Keiser approved the routing, and the end of construction, we made the following changes:
#2 shifted the green site sixty yards toward the tee, shortening the hole
#4 combined with the original #5 to make a long par-4 ... the version Mike walked had a par-3 from the current tees to the start of the fairway, followed by a short par-4 to the current green site, that would not have been such a great hole
#5 added to the routing, a hole I'd come up with in an earlier version
#6 moved tee to accommodate the change to #5 -- the hole we built was in my very first routing, but Mr. Keiser had worried it was too short
#8 moved green a bit back and to the right when we cleared out a cool green site
#9 added the lower green as an alternate
The reason we came up with all of those changes later in the game is
because we knew the site much better after we'd spent a month or two working on it every day. For instance, I understood that the prevailing wind would make the original #4 a weird hole where nobody could hold the green well downwind, and that the next hole would play too short because of the same wind unless the tee went further back, which would push the 12th hole out further away from the shoreline.
Lots of architects pretend that they can visualize the whole course before they start and can get it on plans just right, and that will save the owner money. You can believe that if you want, but not many of those guys have built anything we consider great, and I would posit that it's because they stick to the plans even if they see something better later on in the process, because doing otherwise would be admitting they didn't see it all to start with.
But even Mike Keiser -- who is the most sophisticated client I've had -- would not remember all the changes I described above, unless I put the map right in front of him to remind him. It's really not surprising he couldn't visualize it all in the beginning, since I couldn't, either; I just wonder if he's started to forget how the magic really happens, or if he ever really noticed in the first place.