Dierks is full of crappie, the spawn will be over but you shouldn't have any trouble catching fish. The north half of the lake is covered with old standing trees. Drop a jig or minnow down beside these usually 5 to 8 feet deep and hold on. Small points between Bishop and Caney creek are usally a hot spot. Lots of creek channels and underwater humps to fish also. The locals all have brush piles placed throughout the lake as well, if you find on of these they are usally hold lots of fish as well. The corps has some brush marked by a blue and white sign on the banks. Take a light and try some night fishing on the humps or creek channels. Chart/White marabou jig, or Kalins grubs in wally world or tennessee shad are good colarsfor Dierks. Good luck.