colej we walk mow 3x a week. Monday, Wednesday, and Friday. We normally have 2 guys leapfrog around and get all the greens done.
That said, the Valley Club of Montecito walk mow greens as well. I think they have enough guys to run 6 walkers, then again, they also trailer the walk mowers to each green. They don't bother putting the wheels on. They do have something in place of the wheels that helps them get the walker onto the trailer, it just doesn't interfere with mowing at all.