These flatfish are essentially bottom dwelling fish represented by three species, Southern Flounder which is the second largest of the species averaging 2 to 4lbs, but fish 8 to 12lbs are caught each year.
The World record is 20lbs 9ozs. 

The Gulf Flounder is the smaller of the species averaging 1 to3 lbs. but sometimes as much as 5 to 6lbs.
The World record is 6lbs 4ozs.  

 The Summer Flounder is also known as a "Fluke" and is the largest of the species reaching 20lbs or even more. 
The World record is 22lbs 7ozs.

The best places to catch these species are in the passes, inlets, near shore waters and backwater bays close to the Atlantic or Gulf Coasts.  Peak season is in the fall.

Fairly strong fighters on light line.  Moderate runs on light gear but the outcome always favors the angler.

Still fishing or drift fishing are the best methods for catching flat fish.  Big flounder are best taken using using small live fish as bait.  They will also take shrimp and cut baits.  Flounder jigs are very useful accessories. We catch Summer Flounders (FLUKE) below the dock on shrimps. The biggest so far weighed at 12 lbs ! 

Eating qualities are amongst the best.