Different things on different waters.
I used to bailiff a fishery, although I would not want to say I was a good or bad bailiff, although I know I upset some people as I was very strict on dangerous fishing, litter in the swim. To be honest those were the only things I kicked off or banned anglers for.
The bailiffs on the Lea Valley waters I fish will if time allows stop and chat, drink your tea, have a chin wag. Of the anglers on the lake, I haven't seen one pulling any sneakies, they mostly clean up etc, so the bailiffs to them are polite, rude and in tune. To the poachers, be they Eastern Europeans or whatever,mthey give short thrift.
My local club water, which I no longer fish, I had a run in with a bailiff when there was no-one else on the lake. I was fishing water directly in front of me, but was also accessible from another swim. He didn't like my fishing that feature and got quite rude. If anyone else had turned up, I would quite happily have reeled in. However this particular bailiff didn't care about his mates drinking to excess, being loud or fishing past the end of the island etc, so I complained about him to the club.