Boat Covers

Fabric Weight: What's Actually in the Range

Fabric weight is described in denier, the weight in grams of a 9,000-metre length of the fibre strand used to weave the fabric. Across this range that mostly means 210D, 600D and 800D. The 210D covers are the lightest and most affordable, sized by length in feet with the exact fitted dimensions given in centimetres, and suit boats that spend most of their time under cover at home rather than being towed regularly. The 600D Trailerable Jumbo Marine range is the mid-to-heavy-duty option built for boats that go from driveway to ramp and back on a regular basis, and it's the biggest part of the range from Seamanship, who cover both weights across sizes from 11ft right up to 27ft. VEVOR's range covers pontoon, V-hull and tri-hull runabout styles in 600D and 800D Oxford fabric, with the pontoon-specific covers shipped with support poles and wind-proof straps for the wider, flatter profile a pontoon boat presents to the wind.

Coating: Why These Are PU, Not PVC

Every cover in this range is PU-coated polyester, not PVC. That's a deliberate trade-off rather than a compromise. PVC coatings are heavier and non-breathable, which traps condensation underneath the cover and raises the risk of mildew forming against the hull or upholstery. The PU coating used here repels water while still letting trapped moisture escape, which is what keeps a boat dry underneath through a wet week rather than just keeping rain off the top. It's a lighter, more breathable cover as a result, though it means these covers are water-resistant rather than advertised as fully waterproof, and that's intentional rather than a shortfall.

Canopy or No Canopy

The range splits between covers built to sit flush over an open hull and canopy-style covers designed to fit over a bimini top, targa arch or other raised canopy structure without the fabric collapsing onto it. Marine Tech Co.'s Premium Heavy-Duty range, sized 17ft to 25ft, is built as a canopy-style cover throughout, while Seamanship's range is split between flush-fit and canopy versions depending on the specific listing. If your boat has a canopy or T-top fitted, checking that the cover you're choosing is the canopy version matters more than the denier rating does, since a flush-fit cover pulled over a raised frame will pool water rather than shed it.

Trailering Covers vs Storage Covers

The distinction that actually matters most, though, is what the cover is built to do while the boat is stationary versus while it's being towed. Storage and mooring covers are cut with a looser fit, designed to shed weather over a boat that isn't going anywhere. They are not rated for highway speed. A loose storage-style cover left on a boat that's then towed to the ramp will flap violently in the airflow, and that flapping does two things: it abrades against the hull and gelcoat at highway speed, and for a cover mounted anywhere near the stern or over the outboard, it can obstruct the driver's rear visibility through the tow vehicle's mirrors. In a genuinely bad case, a loose cover tears free at speed and becomes debris on the road behind the trailer. Trailering covers are a different product: snug-fitting, reinforced at high-wear points, and built specifically for the wind load of highway towing. A properly fitted trailering cover can also be left on as a storage cover once the boat is parked. The reverse isn't true, and using a storage cover for towing is the single most common and most avoidable mistake in this category. It usually happens because the buyer owns one cover and assumes it can do both jobs, rather than because either product is poorly made.

Fit Matters as Much as Fabric

A cover sized correctly for the hull, with the straps and buckles actually tensioned rather than left loose "for easy access," is what keeps a trailering cover from flapping in the first place. Even a well-built 600D trailering cover will abrade if it's fitted for a slightly larger hull and allowed to billow. Boat length is the starting filter, but beam matters just as much, particularly on wider hulls like pontoons, so checking the fit against the boat's actual length and beam, not just its general length class, is worth doing before a long tow rather than after gelcoat scuffing shows up.

Match by Boat Brand, Not Just by Numbers

If you'd rather not measure length and beam yourself, the boat cover finder does the matching for you. Select your boat's brand, Quintrex, Stacer, Bar Crusher, Haines Hunter and dozens of other Australian and imported builders are listed, and it shortlists covers already suited to that hull rather than leaving you to translate a model name into a length and beam yourself.

Outboard Motor Covers

The range also covers the outboard itself, sized by engine horsepower rather than boat length, running from covers built for small 6 to 15hp outboards up through the 175 to 225hp end for larger offshore rigs. These are a separate purchase from the hull cover and worth pairing with one, since a motor left exposed corrodes and fades in the same coastal conditions that make a hull cover worthwhile in the first place.

This is the most directly fishing-relevant of the accessory categories a tackle store carries, because it's protecting the boat the fishing actually happens from, between trips at home, at the ramp, or moored for the season. Matching the cover to the job, storage or trailering, matching the denier and coating to the environment, and getting the canopy fit right if your boat needs it, is what determines whether that protection actually holds up over a season of Australian conditions rather than needing to be replaced after one.