It would avoid doing so during hanging, when it's too late to change the map and perhaps the park has mowed a superhighway trail right to an until recently trickier spot.
Yeah, it's such an aggravation when you discover anomalies during bag hanging, the day before the event. I totally agree that running the course in time to make map changes is the way to go -- although time constraints frequently make that impossible.
I had three "crap. . .the maps are already printed" issues this time around -- places where I'm either not very happy with the map or not 100% sure of my bag placement. I'm not going to write them up in course notes, though -- we'll just see how it goes. I have found with BOK that most of my course notes raise issues at a level of precision that 90% of the club doesn't really care about. But had I run the course earlier, I wouldn't even have to think about this.
It's great to see how much mapping and setting you are doing! OCIN's loss and BOK's gain. There is only so much you have time to do.
One of Friday's customers pointed out a huge trash area in one of the dot ditches I used. Broken glass, etc. I.never noticed since I always plucked it from the bottom. Oops! At least this map is close to home so I can break updates into small enough pieces for my short attention span.