I was talking to a captain at ASA that told me of a story when he was on a leg from ATL to DAB and it was really bumpy at all altitudes. The crew was consistantly trying to find some smoother air by climbing, descending etc.....
Needless to say some grumpy passenger had the nerve to come up to the cockpit after the flight to complain and accuse the crew of climbing/descending only to find BUMPIER air. Where do these guys get off. As if we ENJOY a rough ride.