Living dangerously, we tried two new things for this event. One was having participants tear off a tab with their bib number and put it in a container at each rest stop to account for them, rather than having them line up for a volunteer to check their name off a list.
The second was using a spreadsheet participant roster, updated throughout the day, to enter the bib numbers from start/finish and the rest stop locations. This roster was shared using a mesh node network championed by Rob and, I think, very much appreciated by the organizers.
See event photos in the Gallery.