You can troll past a surface bust-up and still come up empty if your spread looks wrong. Tuna are built to spot one baitfish acting odd at speed - and they’ll also spot the boat, the prop wash and anything that screams “not food”. A good trolling spread is simply your way of putting multiple believable targets into the cleanest water you can reach, at speeds tuna actually want to eat.

This guide to tuna trolling spread is written for Aussie boats doing the usual run-and-gun: working temperature breaks, current lines, bait marks and bird activity, then trolling while you search or reset. It’s not about fancy for fancy’s sake. It’s about repeatable positions, lure sizes and leader choices that let you change quickly when tuna change their mood.

What a tuna trolling spread is really doing

A spread has three jobs. First, it gives you coverage - different distances and angles so at least one lure is swimming perfectly no matter how the sea is sitting. Second, it gives you options - a mix of profiles and colours so you can match bait or trigger reaction bites. Third, it gives you information - which lure, which position and which side gets hit tells you what to do next.

If you only take one idea from this: tuna rarely “want lures”. They want an easy meal that looks like it belongs. Your spread should look like a small school with one or two stragglers, not six identical lures marching in a line.

Start with the sea conditions, not your favourite lure

On a calm day, tuna can be painfully fussy. They’ll sit back behind a lure, track it, then peel away at the last second. That’s when longer runs, smaller profiles and more natural colours earn their keep. In rougher water, you can get away with bigger heads, louder actions and brighter patterns because the lure is harder to inspect and easier to locate.

Water clarity matters too. In green or milky water, darker silhouettes and contrast often out-fish “pretty” patterns. In clear blue water, you’re usually better off with restrained colours and clean swimming action - no lure should be blowing out every second wave.

The core positions: short, long and shotgun

Most trailer boats can run a very effective three-rod spread without outriggers. Think of it as three lanes.

Short corner (your noisy, high-percentage lure)

This lure runs closest to the boat, often in the edge of the prop wash. It’s there to get noticed and get crushed. A cup-faced pusher, a bullet with a bit of smoke, or a larger minnow-style hardbody that can handle speed all work here.

The trade-off is this: the short corner is also where tuna get their best look at your leader and hardware. If you’re getting lazy follows or short strikes, you may need to tone down the leader diameter or change to a smaller lure that stays hooked up better.

Long corner/long rigger (your “clean water” lure)

This lure runs further back in clean water, with a straighter, more natural swim. It’s often the first lure a wary tuna commits to because it’s away from the commotion. A bullet skirt, a smaller pusher, or a swimming stickbait-style hardbody can be deadly.

If you’re only running two rods, make this one your “confidence lure” - the one you know swims properly in your typical sea state.

Shotgun (your closer-to-real bait look)

The shotgun sits furthest back, right in the cleanest water you can find without tangling on turns. This is where smaller, subtler presentations shine - especially when tuna are on tiny bait like sauries, whitebait or juvenile pilchards.

Be honest about your boat handling. If you’re doing tight turns around bait schools, a very long shotgun can be more trouble than it’s worth. Shorten it and keep it fishing.

Building a spread for SA tuna: a practical 4-rod layout

If you’ve got the rod holders for it, four rods is the sweet spot before things get messy. You’re covering water, you’ve got variety, and you can still clear the deck fast when one goes off.

Run two “corners” and two “longs”. Keep the short pair a little wider and the long pair a touch straighter. If you’re not using outriggers, you can still spread the lures by staggering distances and choosing lure actions that don’t wander.

A simple way to avoid tangles is to run your shortest line on the heaviest outfit (it gets cleared first and can bully fish away from the other lines), and your longest line on the lightest outfit if you’re chasing school fish. For larger southern bluefin, keep your outfits consistent and built around drag you can actually use.

Lure and bait choices: mix profiles, not just colours

Tuna trolling spreads work best when each lure has a job.

A pusher or cup-faced lure adds commotion and smoke - great in the short position. A bullet skirt offers a straight, high-speed option that still looks like bait - great on a long corner or shotgun. If you’re trolling hardbodies, choose models that track true at your intended speed, because a lure that blows out is basically a flag that says “fake”.

Size is often more important than colour. When tuna are feeding on small bait, downsize first, then adjust colour. When they’re eating bigger offerings or you’re trying to raise fish, upsize one lure in the spread to act as the “standout” target.

Speeds and how they change your spread

Most tuna trolling sits in a band where the lures swim properly and fish can comfortably catch them. The exact number depends on lure style, sea state and what you’re towing.

If your lures are constantly skipping or tumbling, you’re either too fast or the lure is in the wrong water. If your skirts are dragging dead-straight with no pulse, you’re too slow for that lure or it’s too small for the position.

A useful habit is to pick one lure as your “speed gauge”. Watch it for ten seconds in the conditions you’re in. If it’s doing what it should - cycle, breathe, then dive - set your spread around it rather than guessing.

Leaders, connections and why tuna expose shortcuts

Leader choice is where a lot of spreads fall over. Too light and you’ll get rubbed off or cut on a big fish’s tail beats. Too heavy and you’ll get window-shopped.

For skirted lures, many anglers run hard mono leaders for abrasion resistance and better lure action. For hardbodies or when fish are line-shy, a quality fluorocarbon leader can make sense, but it’s not magic - it won’t fix a lure that’s swimming badly.

Keep your connections neat. Big clips, bulky knots and oversized swivels can all reduce bites, especially on the shotgun. If you like clips for quick changes (fair call when you’re chasing moving fish), just match the clip size to the lure and keep it as small as practical for the job.

Hooks: single vs double and the hook-up trade-off

Hook rigs are personal, but there are some consistent truths. Doubles can increase hook-up rates on short strikes, but they also add drag and can affect how a lure swims. Singles are cleaner and often penetrate better, but you need the size and orientation right.

If you’re getting plenty of hits but poor hook-ups, don’t just blame the fish. Swap one variable at a time: change hook size, then leader length, then lure position. Often the fix is moving a lure back into cleaner water rather than changing the lure itself.

Reading bites and adjusting fast

The first bite is feedback.

If the short corner gets smashed repeatedly, the fish are aggressive or the spread needs more noise - consider moving a similar lure into another close position. If only the shotgun gets eaten, the fish are likely wary or feeding on small bait - downsize and lengthen the other lures. If you’re getting strikes on one colour but not another, keep that colour family in the spread and adjust size or head shape next.

When you get a hook-up, clear the lines that are most likely to tangle first - usually the long lines - then keep trolling forward until you’ve got control of the fish. Tuna love to do that first big run across the stern, and a messy cockpit costs fish.

The common spread mistakes we see all the time

Most problems come from a few habits.

Running lures too close together is a big one - they’ll foul on turns or when a fish changes direction. Another is copying someone else’s speed without checking your lure action. And the classic: all lures the same size and type. That looks tidy in the rod holders, but it doesn’t look like a feed.

If you want to tighten everything up quickly, start with one lure you trust, set it to swim perfectly, then build the rest of the spread around that reference.

Gear you’ll actually use (and why it matters)

You don’t need a game boat to troll well, but you do need the basics sorted: reliable reels with smooth drag, quality mono or braid with an appropriate topshot if you like that system, abrasion-resistant leaders, and terminal tackle that won’t open up when a good fish hits at speed.

If you’re restocking leaders, clips, swivels, skirts or upgrading trolling outfits, Reel ’N’ Deal Tackle is set up to get you the right components without you piecing an order together across three different shops - handy when the weather window appears and you’ve got one shot.

A tuna trolling spread doesn’t need to be complicated. It needs to be believable, adjustable, and ready to fish the moment you find life on the water - because the best spread in the world is useless if it’s still in the tackle tray when the birds start working.