Spotted seatrout over the grass flats of Pine Island Sound and Matlacha Pass are open year-round in the Southwest region, with a 15 to 19 inch slot and a 3 fish daily bag. They’re the most consistent legal fish to target on these flats, holding over turtle grass in a couple of feet of water within easy reach of a kayak or a small skiff.
Southwest Florida falls inside FWC’s Southwest management region for seatrout, which runs open year-round with a slot of not less than 15 inches or more than 19 inches total length and a bag of 3 fish per person per day. That’s the same slot and bag as the neighboring Charlotte Harbor region, so anglers moving between Pine Island Sound and Charlotte Harbor don’t need to track two different sets of numbers here, unlike species such as snook where the regional rules diverge sharply.
Turtle grass flats in two to five feet of water are the core habitat throughout Pine Island Sound, and grass broken up by sand potholes tends to outproduce solid, uniform grass, since the potholes give trout an obvious ambush point and give anglers a visible target to cast toward.
Matlacha Pass, the channel running between the mainland and Pine Island, holds trout along its grass edges and deeper channel drop-offs, particularly where the flats meet the pass itself. Deeper edges become more important as the sun gets high or water temperatures swing toward either extreme, since trout pull off the shallowest grass in both very hot and very cold conditions.
No closed season applies here, so trout are a legal target any week of the year. Late fall through spring tends to be the strongest stretch, as cooler water pushes fish onto shallower grass where they feed harder through the middle of the day rather than only at dawn and dusk. Summer fishing holds up on deeper grass edges, with the best activity typically early and late in the day once the sun gets high and the flats warm.
A popping cork rigged over live shrimp is close to the default setup for trout on these flats. The cork holds the bait at the right depth over grass and its pop imitates a baitfish breaking the surface, which pulls trout in from outside normal casting range.
Soft plastic paddle tails on a light jighead cover water quickly when searching for fish, and topwater lures worked over shallow grass at first light draw some of the more explosive strikes trout offer.
Drift or pole across a flat rather than anchoring in one spot, casting the popping cork ahead of the boat and letting it sit between pops rather than working it constantly. Most strikes come during the pause right after the pop, when the disturbance has already drawn attention and the bait is simply hanging there.
Once a fish is caught, mark the spot mentally, or with a marker if the flat is large, and cover the surrounding water thoroughly before moving on. Because trout hold in loose schools rather than as scattered individuals, a flat that produces one fish is worth working for several more casts before assuming it’s fished out.
Light tackle is the right call here. A 7 foot light or medium-light spinning rod, a 2500-size reel, 10 pound braid and a 20 pound fluorocarbon leader handles trout fishing on these flats without being overbuilt for a fish that rarely tests heavy drag.
Eyeballing the slot instead of measuring costs some anglers a citation. The 15 to 19 inch window is tight enough that a fish that looks legal at a glance can be an inch outside it either way, so carrying and using a measuring device every time is worth the ten seconds it takes.
The other common mistake is leaving fish to find fish. Trout school, so a single catch is usually a sign to fan-cast the same spot rather than immediately running the boat somewhere else.
A Florida saltwater fishing license is required to fish for trout here, from a boat, a kayak, or shore. See our Southwest Florida fishing license guide for what residents and visitors need, and the regulations page for the current figures across every species on this site. Our spotted seatrout species guide covers tackle and technique in more depth, and the season and regulation calendar tracks this species alongside redfish and snook sharing the same water.