This isn’t about night fishing in NC PA, but I night fished for trout in MT on and off over the years, and there were several years when I slept in the back of my truck along one of the well known MT rivers that I did some pretty serious fishing at night.
For a couple years there was a guy from Washington state staying next to me. He was sleeping in the back of his Subaru, and we fished together at night. We fished a small back eddy that the trout moved into to sip spinners, or whatever else that came into that eddy.
The trout lost most of their daytime wariness, and you could cast dry flies to them no more than a rod or two lengths in front of where we were standiing. Whenever we hooked and landed a larger trout - one over 15” or so ( and we caught quite a few over 20”) that guy always turned on his flashlight and got out his tape measure so we’d know just how big the trout was. Then, we’d laugh a bit together and release the fish before we resumed fishing.
One year I didn’t see that guy when I was there. We must have been there at different times, but the following year he was there when I was, and he told me I missed being there the year before when he caught a 36” brown trout at night. Knowing how meticulous he was in measuring the bigger trout, I believed him.
Here’s a picture of a 37”, 32# brown caught at night in MT several years ago. Not caught on a fly, but on a lure, and the state record brown trout.