That Derek guy is awesome!
Interesting question: If you are the type to comb a park for tape, are you also the type to listen to an embargo request?
Infiterra never embargoed, sometimes I would go the park in the lead up. I found the most useful bit was understanding the start/finish, as they can have quirky / unmapped entrance/exit options. The rest of the course was generally more easily understood, I thought.
Nice thing about PLRA is the number of opportunities to not see the flag from within GPS error (depression next to depression). Granted, you won't have to go a half mile to relocate if you are sure you are close.
It's interesting overall - I intend to do an orienteering meet John Henry memorial challenge where I explicitly allow GPS, and I'm sure Voit will still beat the GPS user given the conditions I'll use (map on clock). But it is entirely possible in any rogaine pre planning setup to capture the map, align to coords, program your route from your traveling salesperson's optimization, and I'll never know.