Depends on what Light you are using as the competitor. All the matches I have been at have put glow sticks on the flashers, so it is pretty easy for the RO to see. Plus the sparks are cool too.
I've been to a few night matches that are pretty scary. Please talk to some guys who have set them up and run them who know what they are doing. Lights/glow sticks on every person, range clearing protocols, etc.
we use RnR flashers, where would you put the glow sticks at on the flasher that would still show up and not get hit or splattered by the bullet, or put it slightely off away from it ??