A lesson in stocked trout stream mentality, especially in urban and suburban, larger streams. A small minority of stocked trout anglers practice opening day or opening weekend tactics year around. I expect such actions on opening weekend, but some don't understand the nuance between acceptable behavior on opening weekend and such behavior the rest of the year. On the other hand, a minority of fly anglers seemingly to have the need to go through every fly in their box before giving up a hole. When it happens to be on a stocked trout stream and it is one of the most popular holes in the creek, especially a large hole, which means it is probably a stocking site (holes that I typically avoid), fly anglers may find more traditional stocked trout anglers who are going to get fed up with the "road block," especially if the fly angler is not catching anything, and those anglers are going to move in for a try. Additionally, if the fly angler or any other angler who has been there for a while is fishing in one direction, the encroaching anglers are going to feel free to fish other parts of the (large) hole that the first angler isn't fishing at the time or has already worked over. I spend a lot of time fishing flies in an urban public park, heavily stocked, heavily fished stream...the most heavily fished stocked trout section in the Commonwealth recorded so far. I rarely (perhaps once a spring) have any other anglers move in on me. I attribute part of that to the fact that I usually keep moving when I am fishing, searching for the most vulnerable fish that are in the mood to hit rather than repeatedly working over the same fish or group of fish. Additionally, I tend to not get rattled when an another angler is close to me, but fishing from a different angle or fishing to fish that I have already worked over. More power to him or her if they have a better angle, such as approaching a hole from the other side of the larger stream, or if they can catch fish that were not interested in my presentation. Another way to avoid 90% of the urban anglers...get there at the crack of dawn. You'll probably have two hours of peaceful fishing.