I assume you're fishing from a boat since this is posted in the Boater's Forum. Have you tried fishing with live eels at night? There's a TON of info here on how to fish with eels (use the search tool to help you find it), but the short story is to hook them up from underneath the jaw and out an eye. Cast the eel out near structure, let it sink/swim down close to the bottom then retrieve very slowly. Look for areas where there is current and structure.