Flounder head to spawn in the open ocean in fall and return in spring, resulting in two runs. Each run lasts a few weeks with a peak of around 10-14 days. Some flatties stay in the bay or marsh all year, though.
Conservation measures are at least somewhat responsible for the current bounty, just as we saw with redfish after they were seriously overfished years ago.
So, get out there an' git 'em. I've caught more flounder on Road Runners with the body replaced with a Zoom twin tail than any other lure, surprisingly.
I don't like country music, but I don't mean to denigrate those who do. And for the people who like country music, denigrate means 'put down'.