Most anglers picture billfish on the fly as a slow, choreographed game: hookless teasers trolled behind the boat, a fish raised, a switch, a cast. On Baja's Pacific coast there's another way to do it, and it's wild. In Season 3, Episode 125, I sat down with Joseph Zaragoza of Salt Junkies Inc and Mag Bay Lodge, who runs pangas out of Magdalena Bay. Joseph came up on conventional tackle running charters out of San Diego and Ensenada, got hooked on the fly after watching a friend swing flies to tuna from the deck, and now helps anglers cast to striped marlin feeding on bait balls. Here's how that fishery works and how to rig for it.
Why Mag Bay Is Different
Magdalena Bay is a sprawling lagoon system, and its sardines are the engine of the whole show. As schools of bait push out of the bay and around the nearby islands, sometimes five to eight miles off the mouth, striped marlin that have traveled across the Pacific come in to feed on them. The result is bait balls with marlin crashing through them, lit up purple and electric as they hunt.
That changes the playbook. The traditional fly approach for billfish is dredging or teasing: outriggers pull several hookless squid, a marlin strikes the teasers, the crew cranks them in close, and the angler casts as the fish peels off the teaser to attack the fly. That still works. But when marlin are actively balling bait, you can position the boat and cast straight into the feeding fish. Joseph described fish charging a fly dragged right across their face, which is about as exciting as fly fishing gets. If you've ever cast to tarpon working bait, it's that energy with a bill attached.
Rigging for Marlin
Joseph's boats carry three setups so every part of the water column is covered:
- Rods and reels: 12-weights paired with big-capacity saltwater reels for the marlin. Plenty of backing and a smooth, strong drag are non-negotiable.
- Floating line: for poppers when fish are blowing up bait on top.
- Intermediate line: for streamers just under the surface.
- Sinking line, about 500 grains: for getting baitfish patterns down when fish are feeding below the ball.
For the leader, he runs a short class section of roughly 40 to 60 pound, about four to five feet long, and uses a double Bimini twist arrangement in between to act as a shock-absorbing section. The Bimini gives you a loop with built-in stretch, which protects your knots when a hot fish makes that first explosive run or jumps on a tight line.
I asked Joseph what he'd bring if he could only carry one rod anywhere in the region. His answer was a 10-weight loaded with a clear tropical intermediate line and a matching saltwater reel. It won't be the ideal marlin stick, but it covers tuna, dorado, and inshore species, and he'd take his chances with whatever ate.
The Retrieve: Fast, Then Faster
This isn't the place for the tuck-and-pause tarpon strip. Joseph's retrieve for marlin streamers is a two-handed strip, as fast as you can physically move line. Tuck the rod under your arm, point it at the fly, and hand-over-hand that streamer back so it looks like a sardine fleeing for its life. Predators feeding on bait balls key on speed and panic.
On top, it's a different rhythm: pop, pop, stop. Let the popper sit for a beat after a couple of hard pops. Joseph says the fish absolutely blow up on it. And when one eats, stay on the strip set until the fish is tight before you even think about lifting the rod.
Set Realistic Expectations
Joseph was candid that everyone arrives wanting marlin, and marlin days on the fly are special but never guaranteed. The good news is the same water holds tuna, wahoo, dorado, and more, so a well-rigged boat with multiple lines and rods ready stays productive when the billfish aren't cooperating. He also made the point that there's a place for conventional tackle alongside fly gear in the salt. It's all fishing, and a good crew uses whatever gives guests the best day.
Gear
Before you head south, practice your knots. Our Tips and Tricks for Fly Fishing eBook is a solid primer on rigging and line management, and tying a clean Bimini at home will pay off when the boat is rocking. A five-panel cap helps cut the glare when you're scanning for fish working bait. For the 12-weight, sinking lines, and heavy shock tippet, talk to your local fly shop. A good saltwater counter can match a reel and backing to the fish you're actually going after.
