I realized that I use my right arm to grab trees, catch my falls, etc -- and that's the shoulder that is a problem. Maybe I need to switch map/compass hand. That would feel weird.
Really nice course, 4.7k.
Talked to the course designer (Andrea) on Sunday; she said course consultant Linda Kohn told her to make the Brown courses harder; they were originally too easy. The navigation was a lot of fun - and not trivial!