GPHXO Two-Hour Night-Score-O @ Coon Bluff in Phoenix.
The best route was pretty obvious, and the controls were all very close to trails or washes.
So I should have been able to clean the course -- but I was very much thrown off by the scale. I didn't realize it was not actually 1:10,000 (as printed on the map) until long after I had blown past #30. I thought it was too far to go back for, but in retrospect I totally should have done that.
I tried to get it at the end, sprinting a LONG way out and back from the start / finish area at a really uncomfortable pace, but I didn't find it (even though my tracks show I was right on top of it at one point) and got back 45 seconds late. DOH!
But -- VERY fun overall. (I measured later, and the scale was more like 1:8,000.)