Offshore Mahi, Tuna & Sailfish Fishing from Marathon on a 28' Pro-Line

Out on the blue from Marathon, Florida, offshore fishing aboard the 28' Pro-Line OFFSHORE turns every hour into a possibility: a white-hot strike, a screaming reel, the flash of a mahi breaching the surface. Launching from Keys Fisheries Marina at 3502 Gulfview Ave, Marathon, FL 33050, this six-hour trip drops you onto the edge of the Florida Reef tract and the offshore banks where mahi, tuna, and sailfish follow warm currents and bait schools. With room for five anglers, the boat's size means fast anchor, quick moves between productive spots, and a personalized guide-to-angler ratio that makes every cast count. The scene is classic Florida Keys offshore: broad blue water, glassy in the morning and chop-charmed by afternoon winds, edged below by submerged ledges, patch reefs, and the steep continental shelf that funnels pelagic predators. Expect to fish over deepwater structure—hard limestone ledges and coral outcrops—where baitfish collect and game fish hunt. You might see flying fish ejecting like punctuation and dolphins cutting through slicks; sea birds working bait at the surface is usually the cue to run and set up. This operator stands out because of the small-group focus and access: Marathon sits midway through the Keys, placing anglers a short run from the Gulf Stream and fast-moving pelagics without the long fuel bills of larger charters. The captain's local knowledge of seasonal migrations, current lines, and trolling lanes creates higher odds of action for anglers of all skill levels. The boat's layout is designed for both casting and trolling, and the trip works well for families, small groups, and dedicated anglers chasing a trophy. Practical details matter: trips last six hours, max five people, and the launch point is Keys Fisheries Marina, 3502 Gulfview Ave, Marathon, FL 33050. Bring sun protection, motion-sickness remedies, and a camera for airborne mahi or a sailfish's acrobatic run. Respect the Florida Keys National Marine Sanctuary rules (est. 1990) and local catch regulations—targeted species levels change by season, and catch-and-release is encouraged for billfish. Expect a thorough safety briefing, rod setup guidance, and on-the-water instruction for baiting, fighting, and gaffing when appropriate; deckhands often help landing fish and can clean and fillet your catch back at the marina. Tackle ranges from light spinning gear for mahi to heavier conventional outfits for tuna and billfish; bring extra line, polarized sunglasses, and a spare hat. The personalized coaching makes this a great trip for learning tournament techniques and strategies. Whether you're chasing a first mahi or a tournament-style tuna fight, this short-run offshore option delivers a high-adrenaline, education-rich day on blue water, with focused attention from the crew and proximity to some of the Keys' best pelagic fishing grounds. Book early; small boats fill quickly.