JT-
It depends on how many fish you've got, what kind they are, the skill of those who are fishing it, how easy the pond is to fish [shoreline access, depth, islands,etc] and how you define good fishing. As a generalization, however, the fish in a two acre pond can be educated very quickly by fairly intensive fishing....I'd value the opinions of someone like Nate who manages a lot of bodies of water around this size.
How's that for a totally nebulous response, which could have been distilled to "it all depends"?
