Maybe the ROs that decide to allow GPS should have to publish an online GPX file of the route for runners to download? This might see more ROs opting not to allow GPS at their races?

I was well out of my depth (literally) at my first Great Lakes race in 2012 but I got through it by communicating with other runners and even hikers, something that may be lost if GPS was allowed in the majority of races with people looking at their watches rather than just looking around and talking to people.