The NCR trail is in somewhat of a valley, and there is some tree cover at the turn that takes you to the finish. My watch had no issues with the signal. As gregxc pointed out, go to Strava...my run in on there. GPS watches act wonky sometimes, and that's not the point here. outsiderunner ran the full course (plus a little extra). His biggest problem is that he can't accept the one common thread in all of his "misfortunes" ~ himself. He is constantly blaming everything and everyone, except himself. Every race time has an asterisk beside it b/c of some circumstance. I was sitting in the gym at the finish of the NCR race, and he comes in and just starts unloading on the race directors. Pretty poor sportsmanship, IMO. The person responsible for the wrong turn was him. Not the cop, not anything else. As was pointed out, I've never run a race where a cop directing traffic was also a course marshal. He would do well to take a step back from all of this, and take a look in the mirror.
I don't see how a poorly marked course and a policeman who directs a runner off course is his fault.