Fluke (Summer Flounder) Drift Fishing (Drifting) from the back bays to the offshore reefs and lumps. Fluke start moving in towards the inlets and bays early spring. Fluke will generally gather close to the inlet, beaches, and pass on into the back bays and rivers early in the season, in pursuit of the warmer waters. As the season progresses we will find them in deeper waters, in larger concentrations, and more in the doormat sizes. Fluke fishing has been one of the most sought after species of fish along the Jersey shore for many generations.