I'm wondering if odd weather changes might have something to do with changes in mating behavior? It's been very cool and windy up here--the leaves are just now starting to bud on the trees--and there is far less turkey activity than I've ever seen before.
When you run into hunters that don't have a clue about properly making calls or approaching turkeys--well, I'm that guy, and is one reason (besides health issues) that I don't hunt them. Besides that, I have a sweetheart deal with the property owner to target shoot where I do--so I am happy to spot game and let him know what I see, when and where. I haven't seen "Mr Big" in a couple of years now; I assume somebody must of finally got him or he simply passed of old age. I know, excuses, excuses.
Good luck in PA! Persistence pays off eventually.