Flounder gigging on MS coast?

Just drove down HWY 90 from Bay St. Louis to Biloxi and saw a few different groups of folks along the way wading with headlamps out off the beach. I never associated this as a good time of year to flounder gig, but unsure what else they could have been doing. Anybody gig this time of year? I've only done it in the fall.

Eta: was too dark to see if they had gigs or not.