Big bass are stacking up in hydrilla beds in 10 to 20 feet of water.  When you find them, there are usually several up to 8 pounds.  Heavy jigs and Texas rigged worms in greens and black color variations are effective for punching through the grass.  Good fish can be caught schooling in the main lake on calm days.  Creek channels and drop offs near good grass areas are also holding good numbers of fish.