Buying a Used Inflatable Boat in Australia: 12 Things to Check Before You Pay

A used inflatable is only a bargain if the fabric, seams and transom bond have life left. Everything else — floor, seats, pump, wheels — is replaceable. Those three are not.

Second-hand inflatables sell fast in Australia because the good ones are genuinely good value. But the market is also full of tired 0.7–0.9 mm boats that have spent ten summers in the sun. Use this checklist before money changes hands.

Before you inspect: three questions for the seller

1. What is the hull fabric — GSM and thickness? "PVC" is not an answer. You want the GSM and mm, for example 1100 GSM / 0.9 mm or 1500 GSM / 1.2 mm.
2. When was it built, not bought? Fabric ages from manufacture.
3. Where was it stored? Rolled in a shed beats left inflated on a lawn under full sun.

The 12 checks

1. Seams

Look along every seam for lifting edges, bubbling or a shiny glue line. Hot-air welded seams are far more durable than glued — see welded vs glued seams.

2. Fabric chalking

Rub the tube with a damp cloth. Powdery residue means UV degradation.

3. Overnight pressure hold

Inflate to working pressure and come back the next day. A small drop with temperature change is normal — a real leak is not. Read losing air overnight.

4. Valves

Every valve should seat cleanly and hold. Check for over-pressure relief valves — the $10 part that decides fabric life.

5. Transom bond

Push and pull the transom hard. Any movement, gap or lifting at the pontoon-to-transom join is a deal breaker.

6. Transom timber

Look for delamination, swelling and rust weeping around bolt holes.

7. Floor

Air decks blister and delaminate — see air floor blistering. Aluminium floors should sit flat with no bent sections.

8. D-rings, handles and strakes

Peeling fittings mean poor bonding or age. Details in D-rings and handles peeling off.

9. Repairs

Ask where every patch is and why. Multiple patches near a seam mean the fabric is failing, not just punctured.

10. HIN and CE plate

A legitimate boat carries a serial number on the transom and a builder's plate showing design category, maximum load and maximum power.

11. Outboard

If it comes with an engine, check compression, hours, impeller service and whether it has been flushed after salt use.

12. Paperwork

Receipts, warranty documents and any transferable warranty. Most inflatable warranties are not transferable — assume you have none.

What a used boat should cost

As a rough guide, a well-kept 3.3–3.8 m inflatable three years old sells for roughly 55–70% of its new price. If a seller wants more than that, compare it against a new boat with full warranty:

• Aerowave WaveRunner 380 Series 3 — A$4,680, full package
• Aerowave Viper 330 — A$5,195
• Aerowave Viper 365 Open Bow — A$5,595
• Aerowave Viper 400 Sovereign — A$6,970

Every new boat includes free delivery Australia-wide, a 7-year hull warranty, 1.2 mm VALMEX Heavy Plus fabric with a 10–12 year service life. See the full range or the 2026 price guide.

When to walk away

Walk away from any boat with a soft or moving transom, lifting seams, chalky fabric, more than two patches on one tube, or a seller who cannot tell you the fabric spec. There is always another boat, and a bad one costs more to fix than it costs to buy.