Fly anglers in the Northeast often hang it up for the day once the sun is clear of the horizon, fearing that the bright rays of the day have sent the fish deep. While the stripers may have departed the shallows, summer flounder, also known as fluke, can be caught all day throughout the marsh.
If you want to get in on this fishery, target creek mouths in about 5 to 10 feet of water on a dropping tide. Fluke stage here, waiting for bait to get flushed out. Use 6- to 9-weight rods outfitted with a sinking line and a short leader—you want your fly to bounce off the bottom.
You can never go wrong with a Clouser, but any weighted pattern that matches local baitfish will work. Bring in the fly with short strips, hopping it along the bottom. When it gets bit, hit back with a sharp strip-strike, and bring them up off the bottom ASAP.