Sun Tracker Pontoon Boat Cover: How to Choose, Fit and Care (2026)

Updated November 2026

A sun tracker pontoon boat cover protects your deck, seating, canopy and electronics from UV damage, rain, leaves and bird droppings when the boat is parked, docked or stored. This guide walks you through measuring your boat, matching the cover to the right style, fitting it correctly and keeping it in good shape for multiple seasons. Whether you are covering a Sun Tracker with a bimini top, a fence or a bare deck, the steps below will help you get a snug, durable fit.

Why a Sun Tracker Pontoon Boat Cover Matters

Pontoon boats spend long hours in direct sun, and most of their surfaces are vinyl, aluminum, fabric or painted metal. Continuous UV exposure fades vinyl upholstery, cracks flooring and dries out seams. Standing water on a covered deck can stain and promote mildew, and wind-driven debris can scratch windshields and clog drains. A properly fitted cover reduces these problems, and it also makes spring commissioning faster because you are not scrubbing a season of grime off the seats.

Shopping for one? See our guide: Seat Cover for Pontoon Boat: 8 Best Picks Compared (2026).

If your boat sits at a dock all summer, a cover designed for dock use may make more sense than a full trailer cover. The article Pontoon Boat Cover While Docked: How to Choose and Fit One (7 Steps) covers that scenario in more depth.

Step 1: Measure Your Boat Correctly

Most cover sizing errors come from measuring the wrong dimensions. Pontoon covers are sized by length, beam and, for some models, the height of the highest point such as the bimini or T-top. Measure before you shop, and measure with the furniture and accessories in their normal positions.

1. Length: measure from the tip of the bow to the stern, including any swim platform or ladder that will be covered. Some Sun Tracker models list an overall length that differs from the hull length, so check which figure the cover manufacturer uses.
2. Beam: measure the widest point across the pontoons, from outside edge to outside edge, including rails if they stick out.
3. Height: measure from the waterline or deck to the top of the highest structure, such as the bimini frame, T-top or windshield.
4. Obstructions: note the position of the console, bow rails, ladder and any outboard or drive, since these affect where seams and straps must go.

Dimension	What to measure	Why it matters
Length	Bow tip to stern, including platform	Determines overall cover length
Beam	Outside pontoon to outside pontoon	Prevents the cover from sagging or pulling tight
Height	Deck to highest point (bimini, T-top)	Ensures clearance over the canopy
Motor	Outboard height and width	Determines cutouts or motor covers needed

Step 2: Choose the Right Cover Style for Your Sun Tracker

Full-length covers

A full-length cover wraps the entire boat from bow to stern and drops down the sides. It gives the most protection but needs a secure tie-down system and, in many cases, a frame or supports to keep the top from collecting water.

Bimini-compatible covers

If your Sun Tracker has a bimini top, look for a cover designed to fit over it. Some covers include a cutout or a raised profile so the bimini frame is not crushed. Mismatched bimini covers often sag and trap rain. For details on fitting these, see Pontoon Boat Bimini Cover: How to Choose, Fit and Care for One (Step-by-Step).

Dock-style and partial covers

Some owners only need to protect the seating and console. A partial cover is lighter and easier to handle, but it leaves the deck exposed. These suit short-term use or mild climates.

Step 3: Pick the Right Fabric and Construction

Pontoon covers are generally made from solution-dyed polyester, polyethylene or coated vinyl-type fabrics. Look for UV-resistant treatment, a waterproof or water-resistant coating, and reinforced stitching along seams and grommets. Breathable fabrics reduce condensation, which helps prevent mildew under the cover. For a deeper look at materials, see Waterproof Boat Cover Material: Which Fabric Keeps Water Out Best?.

Manufacturers typically specify fabric weight in denier or ounces per square yard. Heavier fabric resists tearing and wind flapping, but it is harder to fold and store. Choose a weight that matches your climate. Windy lakes call for heavier, better-anchored covers.

Step 4: Install and Secure the Cover

A poorly secured cover can blow off, abrade paint or trap water. Follow a consistent process every time.

1. Clean the deck and remove loose items. Dirt and grit under a cover act like sandpaper in wind.
2. Dry the boat as much as practical. Trapped moisture leads to mildew and odor.
3. Lay the cover over the boat with the front seam aligned to the bow and the rear to the stern.
4. Attach the front and rear tie-downs first, then the side straps or cam buckles.
5. Tighten gradually from the center outward so the fabric does not wrinkle or pull on one side.
6. Check that water can run off. Low spots collect rain and can stretch the fabric over time.
7. Use an air vent or breather if the cover includes one, to reduce condensation.

Securing against wind

Use all available tie-down points. Run straps under the hull where the design allows, and avoid tying to the canopy frame alone, since that can bend it. If supports are part of your setup, Supports for Boat Cover: How to Choose and Install the Right Ones (2026) explains how to position them.

Step 5: Maintain the Cover Through the Season

Check the cover every few weeks during storage. Look for loose straps, torn seams and pooled water. Brush off leaves and snow promptly. Rinse with fresh water and mild soap when dirty, let it dry fully before folding, and never use harsh solvents that strip UV coatings. Store the cover dry and out of direct sun when it is not in use.

Common Mistakes

• Buying by boat model name alone. Measure, because trim packages and accessories change dimensions.
• Ignoring the bimini. A cover that does not clear the top will sag and hold water.
• Covering a wet boat. This traps moisture and invites mildew.
• Skipping tie-downs on windy days. Loose covers tear quickly.
• Folding a damp cover for storage. Dry it completely first.
• Forgetting ventilation. Sealed covers in warm weather can build up condensation.

Tips for Longer Cover Life

• Rinse off salt residue if the boat is used in brackish water.
• Keep sharp objects, like fishing hooks and tools, away from the cover.
• Inspect grommets and snaps at the start of each season.
• Store the boat with the cover on only if it is tied down securely and drains properly.

Recommended gear

A few supporting items make installation and upkeep easier.

• Cover support system helps keep the top from collecting water between the bimini and the rails. View on Amazon
• Fabric-safe cleaner removes dirt without stripping UV protection from the cover fabric. View on Amazon
• Heavy-duty cover straps keep the cover snug in wind and reduce flapping. View on Amazon

FAQ

Can I use a standard boat cover on a Sun Tracker pontoon?

Sometimes, but a generic cover often does not account for the bimini, rails and pontoon shape. A cover sized specifically for your boat length, beam and height usually fits better and lasts longer.

How tight should the cover be?

It should be snug enough that wind does not lift it, but not so tight that seams or grommets are under strain. Check tension after the first big wind.

Does a sun tracker pontoon boat cover prevent all sun damage?

No cover blocks 100 percent of UV, but a UV-treated cover greatly reduces fading and cracking compared with leaving the boat uncovered.

Should I cover the boat while it is on the trailer?

You can, but trailer covers and dock covers are designed differently. Make sure the cover you choose matches how the boat is stored.

How often should I clean the cover?

Brush it off as needed and wash it at least once per season, or more often if it is used in salt water or heavy pollen areas.

Can a cover cause mildew?

Yes, if the boat is covered while wet or the cover traps condensation. Dry the boat before covering and use ventilation where available.

Do I need supports under the cover?

Supports help shed water and keep the fabric off the canopy and seating. They are especially useful for covers with high profiles or long spans.

When should I replace the cover?

Replace it when seams separate, fabric tears, UV coating has worn so the material feels chalky, or the fit no longer holds in wind. Consult the manufacturer for warranty and repair options.

Conclusion

A well-fitted sun tracker pontoon boat cover protects your investment from sun, rain and debris season after season. Measure carefully, match the cover to your bimini and storage setup, and secure it properly every time. A few minutes of routine care will keep the fabric performing and make your next launch much easier.

About the author