I will be honest. I did not think last week was going to be anything special. We headed out of Mooloolaba with the SCGFC boys on what felt like a pretty ordinary late summer morning. The water looked alright, nothing screaming at us, and we were just hoping to find some bait and see what was around.
About 40 minutes into the run we started picking up a colour change. That subtle shift from green to blue water - easy to miss if you are not paying attention - and a bit of debris floating along the edge. That is usually your first sign. Mahi Mahi loves that kind of stuff. Logs, pallets, rope, weed patches, anything floating offshore can be holding fish underneath. We slowed down, had a good look and decided to set up a troll along the edge.
Within 20 minutes we were hooked up to a solid bull Dolphinfish. Spent the next 20 minutes strapped in on the harness. Hard pulls, fast runs, the fish going aerial more than once. Classic Dolly behaviour, they fight with everything they have got, right to the end.
It got me thinking about what actually made the difference on the day, because honestly it was not luck. So here are a few things worth knowing if you are targeting Mahi Mahi off the Sunshine Coast.
Read the water before you read the chart
A lot of anglers spend too much time looking at marks on a plotter and not enough time watching what the ocean is actually doing. Rip charts are genuinely useful for Dolphinfish - they help you find where currents are pushing and where water is bunching up. Those pressure points trap bait, and bait brings Dollies.
On the day we found our fish, the colour change told us more than any mark on a chart. Sharp lines between green and blue water, foam or debris sitting along an edge, birds dipping - these are the things you want to be watching. Temperature edges are worth paying attention to too. If your sounder or onboard gauge is showing a change, you are probably in the right area. Dolphinfish are visual feeders and once they find bait they attack quickly, so if you can find the edge you are already a long way ahead.
FADs and debris are your friends
We talk about FADs a lot in game fishing and for good reason. Fish sit just below or beside the structure waiting for bait to gather, and they can be surprisingly easy to trigger once you present them with something worth eating.
The key around FADs is to slow down. Faster trolling works well for active fish out in open water but around structure you want your lure in the zone for longer. That is when lure choice really matters. We were running the Genesis Red and Black Koi Trolling Wobbler and I will admit I was a bit sceptical the first time I put one on. It is a 150mm heavy action wobbler with a 60mm deep diver bib, built specifically for Dolphinfish. Trolls at 4 knots and runs to about 6 metres depth. The red and black Koi colouring looks great in the water and the action it produces, honestly you have to see it. Three strong saltwater #1 trebles and a chrome bar-cheek plate, so it is built to handle a serious fish, not just look the part in a tackle box.
Around FADs and colour changes that day, it was doing exactly what it was supposed to do.
Your gear needs to handle the fight, not just the hook-up
People underestimate how hard a bull Dolphinfish fights. They are fast, they use their whole body and they will make repeated runs close to the boat just when you think you are nearly done. Harness work makes a real difference on heavier tackle, it is not just for marlin.
We were using the GENESIS Offshore 24kg Rod on the day. GENESIS comes out of the same engineering stable as GENESIS Propellers, who have been building propellers for the Australian maritime industry for nearly four decades, so the offshore credibility is genuine. The 6'2" rod is IGFA compliant with zirconia stainless steel guides and an ergonomic EVA grip that is actually comfortable when you are locked into a long fight. The interchangeable butt system - straight, bent or the patented Adjustabutt - meant we could set it up exactly how we needed it in the chair. When the fish is really pulling, that stuff matters more than people realise.
A few things that helped us land the fish cleanly: drag was set and checked before we even left the harbour, we kept pressure on the fish and did not let it rest, and we had the deck organised and a landing plan sorted before the fish got to colour. When a Dolly is still green at the boat they can go absolutely ballistic - head shakes, last-minute dives, the lot. If your team is not ready, that is when you lose them.
They are everywhere in summer, you just have to find the right water
Mahi Mahi can show up at different times of year but off Mooloolaba, summer through early autumn is when things really get consistent. The warmer the water, the more bait gathers offshore and the more active those current edges become. We are talking warm blue water pushing in close, birds working, debris lines forming - when all of that lines up it can be a very good day on the water.
If you are planning a session, check your rip charts before you leave. Know where the current is pushing. Then keep your eyes open on the way out - temperature, colour, birds, surface activity. The fish will tell you where they are if you are paying attention.
Last week was a good reminder of why Mahi Mahi is such a favourite for our crew. When a bull Dolphinfish eats and the fight is on, there is not much that compares to it offshore. If you have been thinking about getting out there this summer, go. The water is in good shape and the fish are around.
Strap in and enjoy the pull.
