Don't go wherever the guy in YCUN trained.
Happily commenced a no-radio runway inspection when we were on short final. Had to go round of course but with no idea what he was going to do next we held overhead for a bit...when it looked like he'd finished we landed just as he decided to zoom towards the runway again. He did give us a cheery wave as he missed our wingtip by inches. Not a peep out of him throughout.