It's quite easy unless you look over the timer and splits or really have someone watching the RO.The RO could hit the back button one time before he shows anyone for guys he likes
The RO could tap the timer on his firearm one time after the last shot is fired for those he doesn't.
Yes, I see your point, thank you for pointing that out. Happily, I've never seen any of that done intentionally, I guess I live in a sheltered world!Chris
I've never seen anyone do it purposely, but I have seen timers get bumped after the last shot is fired. It's easy to backup the timer and see a normal series of splits and then a 6 second delay and the final shot (bump).