Something I learned the hard way a bunch of years back-
If the trout stocking truck pulls up to stock trout where you are fishing, even if you are not fishing for trout, pull out your bait and go elsewhere. I was fishing for bass by the boat launch in Monksville one spring, without a trout stamp as I never target trout, and the truck pulled up and stocked a truckload. I continued fishing where I was, about 75-100' from the launch, and a F&G warden came over and ticketed me. He stated the spinner-bait I had on could also be used to target trout, and I didn't have a stamp for that.
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All things considered, it makes sense getting the ticket, but I hadn't thought a thing about it at the time I was fishing.