A bass rises to some unseen bug on the surface, creating ripples across the brown placid waters of Oyster Bayou. I cast my crankbait over the area and begin a slow retrieve just beneath the surface. The bass ignores the rattling, shimmying pest in his world, but from my vantage point under one of the remaining storm-scarred oaks I watch half-a-dozen crappie chase after the intruder.