You already mentioned most of the presentations I throw when everything gets tough on the water. A wacky senko, weightless t rigged senko, shakey head are go to in my aresnal. I will say a mojo rig/finesse carolina rig can work well in tough situations. I've also started throwing a dropshot and its produced some decent fish. Another presentation I rediscovered and had success with recently are flukes, either weightless or with a keel weighted hook. SK Caffeine Shad has a really nice action on the fall.
Anyways, sometimes you wind up throwing everything plus the kitchen sink in the water and still walk away with nothing to show for it. Its happened to me plenty of times, after several hours of fishing. Also, like mentioned above, just being out at this time of year deserves some props. IMO, any fish right now is a good fish. So, don't get discouraged and keep on pluggin away. You'll start hookin into them again soon enough and remember why its so fun to be out there.