Best Outboard Tarps for Boat Launch & Storage (2026)

How to Choose the Right Product

How to Choose the Right Outboard Tarp

Choosing the right tarp for an outboard hinges on three main factors: thickness (mils), reinforcement/grommet layout, and size/fit. Thickness is measured in mils — thin tarps (around 5 mil) are lightweight, compact and good for temporary coverage or when storage space is limited. For frequent trailering, long-term outdoor storage or areas with heavy brush/debris, look for 8–12 mil or higher: thicker tarps resist punctures, abrasion and wind-blast better. Reinforced edges, plastic or taped corners and closer grommet spacing (every 18 inches) greatly improve tie-down security. Wide-spaced grommets (every 3 feet) reduce anchor points and can allow wind to balloon the tarp if not tied down carefully.

Fit and sizing matter: choose a tarp that provides full coverage with enough extra material to wrap and tie down. A true-to-size tarp simplifies selection; if you need to cover an outboard and part of the transom or prop, add 1–2 feet to both length and width to allow for overlap. Consider how you’ll secure the tarp — ratchet straps, bungee cords, rope through grommets or a combination. For trailering, frequent tie-downs and reinforced corners are crucial; for winter storage, UV protection and heavier material reduce cracking and sun damage.

Ventilation and padding: to prevent mildew when storing, allow for some airflow (lifted vents or a support frame). Where the tarp contacts painted surfaces or the prop, add soft padding or a fender to avoid abrasion. Weight and portability: heavier 12mil tarps offer superior protection but are bulkier to handle; thin 5mil tarps are lighter but trade durability for convenience. Lastly, examine the finish (double-sided waterproof/UV coatings are best) and the grommet material (aluminum/rust-resistant metals last longer).

Budget Tiers

Budget: Expect basic protection with thicker options sometimes offered at lower price tiers — good value if you need heavy mil without premium finish. Mid-range: Balanced feature sets (8 mil, reinforced edges, 18" grommets) that work well for travel and seasonal storage. Premium: Heavier 12 mil+ construction, extra reinforcement, and tighter quality control — best for heavy use, long-term outdoor storage, and rough trailering conditions.