4 Best Tarp to Cover Boat Options for Every Budget (2026)

Updated November 2026

Finding a reliable tarp to cover boat storage is harder than it looks. A sheet of poly tarp can keep rain off a hull for a season, but it can also trap moisture, chafe paint and blow loose in the first strong gust. This guide compares four options that owners and shoppers commonly consider when they want a cover for trailered or stored boats. The selection criteria were fit and sizing range, fabric weight and waterproofing, UV and tear resistance, trailer compatibility, and the kind of feedback owners tend to report over time. Nothing here is based on personal testing; the comparisons draw on manufacturer specifications, brand reputation and common owner feedback patterns.

Our Top Picks

Quick Comparison

Product	Best for	Key feature
HAHASOLE Waterproof 20-22FT Boat Cover	Larger V-hull, ski and bass boats on a trailer	1200D marine-grade Oxford fabric
Tarps Heavy Duty Waterproof 10’ X 12’ Poly Tarp Cover	Covering a boat alongside other outdoor items	10 mil poly with UV and tear resistance
HAHASOLE Waterproof 17-19FT Boat Cover	Mid-size trailer boats	Double stitching and elastic hem
iCOVER Trailerable Boat Cover 14′-16′	Smaller runabouts and fishing boats	Trailerable fit up to 16 ft long and 68 in wide

HAHASOLE Waterproof 20-22FT Boat Cover, 1200D Heavy Duty Trailerable Cover

Best for: Long-term trailer storage of larger open boats with a need for a durable, purpose-built cover

This cover suits owners of V-hull, ski, bass and fishing boats in roughly the 20 to 22 foot range who want a dedicated boat cover rather than a general tarp. It is a good fit for boats kept outdoors on a trailer through a full season.

Key specs

• Sizing range: 20 to 22 feet
• Fabric: 1200D heavy duty Oxford, marine grade per the listing
• Designed for trailer use with an elastic hem
• Double stitched seams

Pros

• Purpose-built shape and elastic hem help it sit snug over the hull
• Heavy denier fabric is designed to resist tearing and abrasion
• Double stitching reduces the chance of seam failure under wind load

Cons

• Heavier and bulkier to fold than a poly tarp, so it takes more room to store
• Requires accurate measuring, since fit outside the listed range can leave gaps or strain seams

Bottom line: A strong choice for owners of larger trailer boats who want a dedicated cover and are willing to measure carefully before buying.

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Tarps Heavy Duty Waterproof 10’ X 12’ Poly Tarp Cover

Best for: Covering a boat as part of a general outdoor setup, or as a temporary cover

This is a multipurpose poly tarp rather than a fitted boat cover. It suits owners who need a flexible cover for a small or stored boat, or who want one tarp that also works for patios, firewood and equipment.

Key specs

• Size: 10 by 12 feet
• Material: 10 mil heavy poly, listed as waterproof, UV resistant and tear and fade resistant
• Intended uses include boats, cars, roofs and patios

Pros

• Versatile enough to cover a boat, equipment or outdoor furniture
• Heavy mil thickness gives good water resistance for the price tier
• Easy to drape over a boat-shaped frame or a low cradle

Cons

• Not fitted, so it can flap, pool water and rub paint without proper support
• Poly fabric may trap condensation under the cover if airflow is poor

Bottom line: Best for owners who want a flexible, general-purpose cover and can add supports and ventilation to prevent rubbing.

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HAHASOLE Waterproof 17-19FT Boat Cover, 1200D Heavy Duty Trailerable Cover

Best for: Mid-size trailer boats that need a fitted, purpose-built cover

This model covers the mid-length range and shares the same family of features as the larger version. It suits owners of bass, fishing and ski boats around 17 to 19 feet who want a dedicated cover for trailer storage.

Key specs

• Sizing range: 17 to 19 feet
• Fabric: 1200D heavy duty Oxford, marine grade per the listing
• Elastic hem and double stitching

Pros

• Sized for a common range of trailer boats, so fit is more predictable
• Heavy denier fabric and double stitching support durability
• Elastic hem helps keep the cover secured in moderate wind

Cons

• Fit depends on accurate length and beam measurements; off-size boats may need a different model
• Like any fitted cover, it still benefits from a strap or tie-down in exposed locations

Bottom line: A solid pick for mid-size trailer boats where a good fit matters more than general-purpose flexibility.

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iCOVER Trailerable Boat Cover- 14′-16′ Heavy Duty Waterproof Tarp Cover

Best for: Smaller runabouts and fishing boats on a budget-conscious setup

This cover targets smaller boats up to about 16 feet long and 68 inches wide. It suits owners of fish, ski and runabout boats who want a trailerable cover without stepping up to a larger size.

Key specs

• Sizing range: 14 to 16 feet long, up to 68 inches wide
• Fits V-hull, fish and ski, pro-style, fishing, runabout and bass boats
• Designed as a trailerable heavy duty waterproof cover

Pros

• Sizing suits a wide range of smaller trailer boats
• Trailerable design is intended for boats kept on a trailer outdoors
• Generally a budget-friendly option within dedicated boat covers

Cons

• Narrow sizing window; boats wider than 68 inches will not fit well
• Owners often report that lighter materials need extra straps in windy areas

Bottom line: A practical choice for smaller boats where a dedicated fitted cover is wanted without a premium price tag.

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Buying Guide

Waterproofing and fabric weight

Look for the fabric denier (such as 1200D) and whether the material is described as marine grade or coated. Heavier denier usually means better tear and abrasion resistance. For poly tarps, mil thickness matters: a 10 mil tarp is far more durable than a thin hardware-store sheet.

Good picks for this: HAHASOLE Waterproof 20-22FT Boat Cover, Tarps Heavy Duty Waterproof 10’ X 12’ Poly Tarp Cover

Size and fit

Measure the boat’s length from bow to stern and its beam at the widest point, then add clearance for the hull profile. A cover that is too small will strain seams; one that is too large will flap. Check the listed sizing range before ordering.

Good picks for this: HAHASOLE Waterproof 17-19FT Boat Cover, iCOVER Trailerable Boat Cover 14′-16′

Use case: trailer storage versus open tarp coverage

A trailerable cover is designed to stay on the boat while it rides or sits on a trailer. A general tarp is more flexible but usually needs a frame or cradle. Decide which setup you have before choosing.

Good picks for this: HAHASOLE Waterproof 20-22FT Boat Cover, iCOVER Trailerable Boat Cover 14′-16′

UV resistance and sun exposure

Long-term sun exposure can break down fabric and fade color. Look for UV-resistant ratings in the listing. Cover fabric wears faster in hot, sunny climates, so plan on replacing a cover sooner there.

Good picks for this: Tarps Heavy Duty Waterproof 10’ X 12’ Poly Tarp Cover, HAHASOLE Waterproof 17-19FT Boat Cover

Ventilation and condensation

A fully sealed cover can trap moisture, leading to mildew and hull damage. Choose a cover with some breathability or add vents, and lift the edges slightly in humid weather. Avoid leaving a damp cover on the boat for long periods.

Good picks for this: Tarps Heavy Duty Waterproof 10’ X 12’ Poly Tarp Cover, iCOVER Trailerable Boat Cover 14′-16′

Wind security and tie-downs

Elastic hems, strap points and fitted shapes resist wind better than loose tarps. For exposed storage, use extra straps under the hull and secure the cover at each corner. Stretch and wind load are the usual causes of cover failure.

Good picks for this: HAHASOLE Waterproof 20-22FT Boat Cover, HAHASOLE Waterproof 17-19FT Boat Cover

Durability and care

Rinse covers after use and let them dry fully before folding. Store folded covers out of direct sun and away from sharp objects. Inspect seams and grommets each season; minor repairs are easier than replacing a failed cover mid-storage.

Good picks for this: HAHASOLE Waterproof 17-19FT Boat Cover, Tarps Heavy Duty Waterproof 10’ X 12’ Poly Tarp Cover

FAQ

Can I use a regular tarp to cover a boat?

Yes, a heavy poly tarp can keep rain and debris off a boat for a short period. For longer storage, a fitted cover is generally better because loose tarps flap, trap moisture and can rub paint or gelcoat.

What size tarp do I need for a boat?

Measure the boat’s overall length and beam, then choose a tarp or cover that exceeds those dimensions with room for the hull shape and any supports. Check the sizing range listed by each manufacturer before buying.

How do I keep a tarp from blowing off a boat?

Use tie-down straps under the hull, cinch the cover at the bow and stern, and make sure the edges are secured at every corner. Elastic hems and fitted shapes also reduce movement.

Will a tarp damage the boat’s finish?

It can if it rubs against paint or gelcoat, especially when wet and flapping. Use padding at contact points, keep the cover taut, and avoid trapping water on the surface.

How do I prevent mildew under a boat cover?

Allow airflow by using vents or lifting the cover edges in humid weather, and let the boat and cover dry before storing. Remove standing water and avoid storing the boat wrapped while wet.

How long does a boat cover last?

Lifespan depends on fabric weight, UV exposure, climate and care. Owners often report that heavy denier covers last several seasons with regular cleaning, while thin poly tarps may need replacing sooner. Check seams and grommets each year.

Conclusion

For larger trailer boats that need a dedicated, durable cover, the HAHASOLE 20-22 foot model is the most purpose-built option here. The HAHASOLE 17-19 foot cover suits mid-size boats where fit is the top priority. The Tarps 10 by 12 foot poly tarp works best as a flexible, general-purpose cover when you can add supports and ventilation. The iCOVER 14-16 foot cover is a practical pick for smaller runabouts and fishing boats. Measure your boat carefully, match the sizing range, and choose a cover that fits your storage method.

Sources

• Boating safety guidance, including how to secure and maintain vessels in storage (uscg.mil)
• Information on material safety and proper handling of boat care products and runoff (epa.gov)
• Industry standards and guidance related to recreational boat construction and care

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