In my experience fishing for these planted trout I have had the best luck with rainbow sparkle power bait. Not the power eggs but the stuff that is like paste or dough. Fish it on the bottom with the weight about 10 inches below the hook. It seems it is so similar to what they are fed they just can't resist it. Last time I fished for plants up at Mill Creek Ponds I tried worms, salmon eggs, and different kinds of power bait. The rainbow sparkle power bait was like crack to them!
I can also relate to seeing the trollers limit out and going cold from the banks.
Ed is right about the Narrows. That dock has good access to deep water. I have caught some fish there well after a plant.
Thank you for sharing, always appreciated.