Fly fishing for sailfish in Costa Rica

The short answer

You don't troll a fly for a sailfish. You tease one up. The crew drags a spread of hookless teasers behind the boat, a sailfish rises and starts slashing at one, the mate pulls the teaser away as the captain takes the boat out of gear, and you cast a big fly into the hole the teaser left. If the fish is fired up, it turns and eats. That's the bait and switch on fly, and Costa Rica's Pacific coast is one of the best places in the world to try it.

Our guide to fishing techniques in Costa Rica explains the whole range of methods crews use here; this page goes deep on just this one: how a fly day really runs, the tackle, the cast and the hook set, the rules, and how to pick a boat that won't waste your day.

Why Costa Rica is a good place to try it

Most anglers miss their first few shots, so you want plenty of fish and crews who've done the switch hundreds of times. Costa Rica has both.

The Pacific sailfish (Istiophorus platypterus) feeds near the surface, which is what makes a fly possible at all. Off the Central and Southern Pacific it's thickest from about December to April, and in Guanacaste from about May to August, so there's a sailfish season somewhere on the coast for most of the year. Our sailfish page covers the fish itself, and the season chart shows the months.

The method has deep roots in this part of the world. The first billfish recognised as caught on fly, a 74.5 lb Pacific sailfish, was landed at Piñas Bay, Panama, in 1962 using teased fish. And fly instructor Jake Jordan writes that in 91 days of fishing in Costa Rica in the early 1980s he hooked 119 billfish on fly and landed 11. That ratio is worth remembering.

How the bait and switch works on fly

The method is the same teaser trick Costa Rican crews use with conventional tackle and a ballyhoo, with one big difference: there are no hooked baits in the water at all. Everything behind the boat is there to raise and excite a fish, and the only hook on board that matters is on your fly.

The spread

A typical fly spread is small and tidy. Salt Water Sportsman's sailfish-on-fly guide describes 1 daisy chain of plastic squid (often with a "smoker" lure that trails bubbles) and 2 lures carrying hookless baits on flat lines from the transom corners. The hookless baits can be ballyhoo, small bonito, or strips of tuna or dorado belly, rigged so a sail can taste them but can't get hooked.

Todd Staley's account for FECOP of a first sailfish on fly out of Quepos describes 4 hookless teasers trolled at 6 to 7 knots, with "naked" ballyhoo (no hook) added for scent and taste. Crews keep teasers on the side away from your casting arm so the fly line doesn't tangle with them.

Step by step

1. Watch the spread. Everyone looks for a bill, a dorsal fin or a dark shape behind a teaser. The captain or mate calls which one.
2. Tease it in. The mate works the teaser toward the boat, letting the fish knock at it and pulling it away just before it can grab it. A fish that gets a mouthful of bait often loses interest, so the teaser has to keep moving.
3. Get ready. You stand in the casting corner with about 25 ft of line already out, as Jordan describes, and the rest stripped into a bucket or onto a clear deck.
4. Out of gear. When the fish is close, usually 30 to 40 ft behind the transom, the captain takes the boat out of gear. Some captains turn the boat as they do it to give you a clear lane.
5. Pull the teaser, cast the fly. The mate yanks the teaser out of the water at the last moment, and your fly lands where it was.
6. Let it eat. The sail, now hunting for what it just lost, finds the fly.

The angler gets the credit, but the mate makes most of the catch: Salt Water Sportsman calls the mate the key role, because the timing with the teaser decides whether the fish arrives hot or bored.

The tackle

Sailfish on fly is big-game tackle, not trout gear. Our techniques pillar notes that FECOP's billfish guide lists 10 and 14 weight Temple Fork rods at Crocodile Bay and 14 to 18 weight rods on one specialist boat. For most sailfish, a 12 to 15 weight outfit is the sweet spot.

Pink and white is the Pacific standard, and the popper head matters: its splash pulls the fish's eyes to the spot where the teaser vanished.

Bring your own outfit if you can: some crews, such as Papagayo Fishing in Coco, ask fly anglers to bring their own, and our bait and tackle guide notes that we found no dedicated fly shop in the country. Pack a dozen flies already rigged on leaders, spare class tippet, and a spare fly line. A heavy fly rod travels well in a tube; our trip planning guide has more on flying with tackle.

The cast, the eat and the hook set

This is where most first-timers lose their fish, and almost always by being too quick.

Fighting and releasing a sailfish on fly

A hooked sailfish usually jumps and runs right away. Jordan's advice is to keep the rod tip low or in the water and pointed at the fish, drop the tip and wind fast whenever slack appears, and let the captain back the boat down toward the fish. After 5 to 10 minutes you can start to put real pressure on it. Staley's angler had a sail strip about 150 yards of line and brought it boatside in about 20 minutes.

Shorter is better for the fish. MarViva's best-practice guide asks for short fights, because an exhausted billfish is less likely to survive, so a good crew uses the boat to help.

When the leader reaches the rod tip, the mate takes the leader and the bill. In Costa Rica the fish stays in the water: INCOPESCA's agreement AJDIP/280-2014 bans putting billfish on deck for photos and using gaffs or hooks to bring them alongside. The crew removes the fly or cuts the leader close to the mouth, holds the fish facing into the water flow with the boat moving slowly ahead, and lets it go when it kicks. You can lean over for a photo. Our page on conservation and catch and release explains why this matters.

If you want it to count: IGFA fly rules

You don't have to fish by the rule book, but record claims depend on it. The main points of the IGFA's fly rules (May 2026):

• No trolling the fly. Trolling a fly behind a moving boat isn't allowed, and the boat must be completely out of gear when the fly is presented and during the retrieve.
• Class tippet at least 15 inches long and no stronger than 10 kg (20 lb).
• Bite (shock) tippet no longer than 12 inches, of any strength.
• A real fly. No bait or scent on it. A single fly, on a single hook or 2 hooks in tandem, with the hook eyes no more than 6 inches apart and the second hook inside the wing. No trebles.
• Rod at least 6 ft long, with a butt no longer than 6 inches.
• The angler fights the fish alone; the mate may take the leader.

Hookless teasers are fine. And on the law side, Costa Rica's circle-hook rule (Decreto 36782) applies to natural bait, so it doesn't apply to a fly with no bait on it. Teasers carrying real bait have no hook, so they're within the rules too. Every angler aboard still needs an INCOPESCA licence; our Costa Rica fishing rules guide explains how to buy one.

Where and when to go

Fly fishing needs calm water and plenty of fish, so the season and the sea both matter.

Those months follow our season chart; sailfish are caught in every month in smaller numbers. Our Central Pacific sailfish season guide has the month-by-month detail for Los Sueños and Quepos, and the Papagayo winds guide explains why Guanacaste runs on the opposite clock.

Avoid big tournament weeks, when the best crews are booked, and book a full day: the grounds are often an hour or more out, and Staley's angler trolled for nearly 3 hours before his first shot.

Choosing a boat that does it often

The crew matters more than the boat. A mate who has teased hundreds of sails to a fly will give you far more good shots than one who usually drops back ballyhoo. Ask before you book:

• How many fly days do you run a season, and who teases the fish?
• Do you take the boat fully out of gear for the cast?
• Do you supply fly rods and flies, or should I bring mine?
• Do you keep every billfish in the water for the release?

These operators advertise fly fishing and showed recent activity when we checked their websites or booking pages in November 2026. Nobody pays to be listed, and it isn't a ranking.

For the full list of crews on each coast, see our zone guides for the Central Pacific, the Southern Pacific and Guanacaste. And if the fly bug bites inshore, the same teasing trick works on roosterfish; our guide to popping and jigging for roosterfish and snapper covers the rocks.

For every other way Costa Rican crews catch fish, from trolled ballyhoo to surf rods, head back to our complete guide to fishing techniques in Costa Rica.