awaaaa flounder, shoot I opened this hoping you were talking frogs.
As for flounder in Louisiana I have used white quartz and green LED (Aurora).
Green is easier on my eyes, but the white shows shadows of outlines of the fish better in my opinion. My green Aurora puts out more distance light, but the best part is that because it is LED I can run it off of a 12v belt battery, and not be restricted to staying in the boat. I'll put up with the glare of the white light when in the boat, but being able to wade with the LED eliminates having to consider boat control and when I'm in an area that is productive, work it much more thoroughly. Shuffle, shuffle, shuffle, Ray's are bad news. Don't ask me how I know.
boatstall
"Hello, My name is Bill, and I'm a tackleholic"