On the flip side, it’s equally helpful to fish the same water over and over again, throughout an entire season. Carefully observe how your river, pond or lake changes depending on water levels and flow, temperature, light and many other variables. At the same time, note which fishing tactics work—and which don’t—under the changing conditions. This deep dive into the rhythms of a single waterbody can yield great insights. And completing the loop, much of what you learn will apply to other waters, as well.