That's exactly why I never bother intervening, people know but they just don't give a $#!+ or figure they will WON'T get caught or ratted out.
Besides, HAY Creek has wild trout too so it isn't just about ignoring the rules and catching stockers, it's the general disregard for regulations in general which seems to be way more prevalent since COVID.
As for me, I watch, I observe and I call 717-626-0228 (Southeast Regional Law Enforcement) and rat them out and let the WCO decide how to proceed because I will always be of the opinion a fine has more benefit than a warning...
Another advantage is I have been a subscriber to the Angler & Boater (formally the PA Angler) magazine forever and I always hope one of those encounters makes the "Notes From the Streams" section,