Back in the 80's there was a dude we called New-wave that was a Bennett Spring spook, you could find him standing in the same spot at the high bank hole pretty much every day. Never saw him catch a fish, or change fly's, he just stood there quietly pretending to fish and if you spoke to him he'd just give you a nod. We used to joke about how bad that would suck for a job.
What blew his cover was that he never had a daily tag pinned to him.
"Dude, don't spark that doobie now, ol'NewWave is downwind".
I can't remember why we ever started calling him NewWave, wish I could.