They drop off ledge edges to watch for shrimp and baitfish passing overhead. They gather around points, shell reefs, weedy shorelines, pilings or other places where they can hide and attack. Any structure washed by strong tides may attract flounders. They'll hide behind pilings and structure on the downcurrent side. In current, pick the bait up and let it float down with the current.
Coastal islands provide excellent structure to attract flounders.
Tides cut small passes through these barrier islands. These passes between islands make super places to search for flounders. Little pockets, bays or sandy shelves on these islands also form perfect floundering holes. Sometimes, picky flounders in even the best spots just won't cooperate. At those times, they may need a little encouragement.