Crab Pot Fishing from an Inflatable Catamaran: The Australian Setup Guide

If you have ever tried to work a stack of mud crab pots from a tinnie, you already know the problem: the deck is narrow, the gunwales are sharp, and one slipping pot can put a hole in a $1,200 livewell. An inflatable catamaran flips that maths around. A wide, flat, soft deck with two large tubes either side is genuinely the best crab boat platform most Aussie estuary crabbers will ever step onto — and the price of entry is a fraction of a glass cat.

This guide is the one we wish someone had given us when we started chasing crabs out of the Daly, the Noosa River and Moreton Bay. It covers pot choice, deck layout, baiting, how to actually drop and retrieve without losing a pot, and the legal bits the rangers will absolutely check.

Why a catamaran beats a tinnie for crabbing

Three reasons, in order of how much they will change your day:

1. Deck space. A 3.6 m inflatable catamaran has roughly 40% more usable deck area than a 3.7 m punt because the tubes are not eating into your floor. You can stack 8 round pots and still have room to gut a fish.
2. Stability at rest. Crabbing is 90% standing still. A cat sits on two widely-spaced tubes, so it does not roll when one person steps to the gunwale to haul a pot. A mono-hull tinnie heels noticeably and tips ropes overboard.
3. Shallow draft. Most Aussie crab country is 0.4 m to 1.5 m of tannin water with oyster racks and submerged stumps. A cat with an Air Deck floor draws around 180–220 mm fully loaded — you can poke up creeks a punt will not enter.

If you are still comparing platforms, our inflatable catamaran range overview walks through the deck dimensions of each model.

Picking the right pots

There is no single "best" crab pot — it depends on species and state.

Pot type	Best for	States allowed (recreational)	Notes
Round collapsible (4-entry)	Mud crabs, sand crabs	NT, QLD, WA, NSW	Easy to stack flat. Sinks fast.
Witches hat / dilly	Blue swimmers, sandies	NSW, VIC, SA, WA	Banned in QLD and NT. Check local rules.
Hoop / drop net	Blue swimmers	NSW, VIC	Active fishing, no soaking.
Square hard-frame	Mud crabs (commercial style)	NT, QLD with limits	Bulky on a cat deck.

A pair of pots per person is the rough rule. In QLD recreational crabbers may use a maximum of 4 pots per person; in the NT it is 10; in NSW it is 1 hoop net per person plus witches hats with strict tagging. Always check the current rules with your state fisheries agency before you head out — limits change and fines start at around $500.

Bait that actually works

• Mud crabs: fresh mullet heads, chicken frames, or kangaroo neck. Mud crabs hunt by smell over 200 m+, so oily and bony is the rule.
• Blue swimmers and sand crabs: pilchards, fish frames, or pippie meat in a small mesh bait bag.
• What does not work: cooked bait, anything frozen for more than two months, or commercial pellets. The plume is too weak.

Rebait every 24 hours in summer — fresh bait outfishes old bait 3 to 1.

Deck layout for a catamaran crabber

The mistake most first-time cat crabbers make is treating the deck like a tinnie. You do not need a single "work station" — you need two clear lanes.

Port side (drop side):

• Pots stacked midship, lashed down with a single bungee.
• Bait bucket forward of the pots, with a lid (smell brings mosquitoes and salties).
• Coiled rope draped over the tube, NOT on the floor. A loop around an ankle in 3 m of water with a 5 kg pot attached is the most common Aussie boating fatality you have never heard of.

Starboard side (haul side):

• Empty deck for the catch bin and a measuring gauge.
• A 60 L Esky doubled as a seat and a kill tank with ice slurry.
• Crab tongs and a stout glove hooked to the carry handle.

The transom stays clear for the outboard. On a cat, the outboard well sits between the tubes, so prop wash will not foul a pot rope dropped behind the boat — a real advantage over a mono-hull where ropes love finding the leg.

Dropping a pot from a catamaran

Cats sit higher above the water than a tinnie because the tubes lift you. That means a pot dropped over the side hits the water harder. Two-step it:

1. Lower the pot to water level with the rope hand-over-hand.
2. Release. The pot sinks square instead of tumbling — fewer tangles, fewer escaped crabs on retrieval.

Mark the float with your fishing licence number and date as required in QLD and NSW. Use a hard polystyrene float of at least 15 cm — not a plastic bottle. Rangers do check.

Retrieving without losing your pots

The single biggest cause of lost pots is drifting over the rope and cutting it with the prop on approach. On a cat this is easier to avoid because you can idle in from upwind, kill the motor, and drift onto the float — the wide tubes give you enough lateral stability to stand and haul without re-engaging the prop.

If the tide is ripping (anything above 2 knots in a Top End creek), tie off to a mangrove root first. A cat sitting beam-on to current with one person leaning over a tube is fine; the same manoeuvre in a tinnie gets people wet.

Cleaning and storage at the end of the day

Salt water and crab juice will eat anything they touch. After a crabbing trip:

• Rinse the pots in fresh water and stack upside down to drain.
• Hose the deck — including under the pots where bait juice collects.
• Wipe the tubes with a 10% vinegar solution if you have been in mangrove mud (the tannins will stain PVC if left more than 48 hours).
• Air dry the deck before deflating. A wet rolled cat will grow mould within a week in Darwin or Cairns humidity.

Our inflatable boat maintenance guide covers long-term tube care if you are running a heavy seasonal program.

Legal must-knows by state

• NT: 10 pots per person, mud crab minimum 14 cm carapace, no berried (egg-carrying) females.
• QLD: 4 pots per person, mud crab minimum 15 cm, witches hats banned, $500+ fines for unmarked pots.
• NSW: Hoop nets only (no traps left to soak), tag every gear with name and address.
• WA: Blue swimmer minimum 127 mm carapace, 10 traps per person in the West Coast bioregion.
• VIC and SA: Mostly drop nets only, daily bag limits apply.

Always carry a crab measure. Undersize crabs and berried females must go back, alive, with minimal handling — drop them, do not throw them.

Why this matters for your bottom line

A good day's crabbing puts 6–10 mud crabs in the Esky. At Sydney Fish Market wholesale that is $300–$500 worth of seafood, and it is the kind of trip families and small charter operators repeat 30+ times a year. A platform that handles the load safely and packs into the back of a 4WD pays for itself fast — which is exactly why so many of our WaveRunner 380 and Viper 400 Sovereign buyers are weekend crabbers, not offshore cowboys.

If you are sizing a boat specifically for crabbing, the 380 is the sweet spot for two people with 8 pots; the 400 is the choice if you also want to take the family out on weekends without unpacking gear.