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1. How does Hull Protector Boat Lift Alternative work, and what are its benefits?

Hull Protector is a patent-pending floating dry dock with a low profile. The system uses a tough polymer composite shield attached to a sealed-off buoyant frame that can be pumped free of water and will protect the bottom of your boat from growth and floating debris without the need to lift the boat. Just pull your boat past the Air Gate, and the system will evacuate all the water within the barrier and leave the boat dry and protected from sea life and electrolysis damage.

Hull Protector consists of a rectangular floating frame, and a flexible polymer composite barrier that is submerged. The boat enters and leaves the barrier through a gate on the back end of the frame. The gate is raised and lowered using compressed air; when the boat is within the barrier, the gate goes up and isolates it from the rest of the marina in a pool of seawater. The water is then pumped out automatically, as the flexible barrier hugs the contours of your boat and protects it from any water-borne threats. The pump turns on and off with an automatic water sensor, so even when you’re not around, if rainwater or wash ends up within the barrier, it will be evacuated before it can do any damage. Hull Protector give you the benefits of a dry dock without the need to lift your boat out of the water.

2. The major advantages of Hull Protector Boat Lift Alternative

  • It’s completely ecologically safe.
  • Saves time, money and energy.
  • Doesn’t reduce boat value, unlike antifouling paint.
  • Protects your boat from debris, as well as oil, seaweed, etc.
  • Contains any spills from your boat, like gasoline, allows for contained cleanup.
  • Catches dropped objects (phone, wallet, etc) while boat is docked.
  • Highly visible frame serves as a docking guide.
  • Quick installation, almost no maintenance to speak of.
  • Eliminates time & safety issues that come with lifts or trailers.
  • Avoid the expensive hassle of bottom cleaning.
  • Permits are generally no required.
  • Works with many boat types – V-Hulls, catamarans, jetskis, inboard & outboard motors.

3. Is it difficult to install a Hull Protector Boat Lift Alternative?

Hull Protector is very easy to install. Here are the steps:

1) Spread out the flexible bottom shield.

2) Assemble the floating frame by attaching the buoyant pipes together.

3) Link the air gate to the back end of the floating frame.

4) Combine the frame/air gate and the bottom shield.

5) Pull the assembled Hull Protector into the water, secure it to the dock with ties.

6) Put the corresponding parts of the water pumping system within the barrier.

That’s it! To make assembly even easier, every Hull Protector comes with fully illustrated instructions. The whole assembly process can be done by one person, and typically takes no more than 2-5 hours, depending on the size of the system. (Although it’s recommended to have at least two or more people move the floating component to water after assembly, to prevent folding.)

4. How is the Hull Protector Boat Lift Alternative attached to a dock?

It’s extremely simple – the floating elements of the system are simply tied to the dock in 4 places, just like a boat or buoy.

5. How big is the Hull Protector Boat Lift Alternative, how much space does it need?

Hull Protector has a very low vertical profile – only 3 inches above the surface. Horizontally, it’s only a bit larger than your boat.

6. Is the bottom of Hull Protector Boat Lift Alternative susceptible to barnacles and other marine growth?

To a limited extent. The bottom of the flexible barrier will see a certain amount of growth, that will have otherwise stuck to the hull of your boat. However, the composite polymers used in the Hull Protector’s construction, as well as the material’s flexibility, will reduce the amount of growth that occurs on it, compared to a rigid object such as a boat hull. Moreover, the Hull Protector can function just fine with barnacles and other growth, until the sheer weight of it becomes unmanageable. In this case, a bottom-cleaning diver needs to scrape the heaviest growth from the barrier, using a gentle tool such as a brush or paint scraper. Keep in mind that it’s not necessary to clean the shield off completely, since issues of drag or corrosion aren’t relevant like they would be with a boat – it’s just about reducing the weight of the growth, so the barrier can function properly.

7. How durable are the materials?

Extremely. Most of the composite polymers the Hull Protector is made of can last up to and over a century in the sea. There are no thin inflatable components that will degrade or puncture easily due to salt water. If the easy maintenance steps are followed, the bottom protective shield will resist the harsh environment of the sea for many years. If punctures or other damage does occur, the shield can be mended relatively easily. If it’s beyond repair, the entire shield can be replaced right in the water, even with a boat inside.

8. What is the Warranty?

Hull Protector systems are covered by a 3 year limited warranty.

9. Can the bottom shield be repaired or entirely replaced, in case of damage?

Absolutely. The ability to quickly and easily replace the shield is one of the design features of Hull Protector. In order to remove and replace the shield, just detach it from the barrier frame, and clip a new one in place (new shields are available). You can also patch and repair the old shield, if the damage is not fatal. This is one of the ways in which Hull Protector is superior to any other boat hull protection solution available.

10. Can Hull Protector sink?

No. The buoyant elements of the frame are completely sealed off; in addition, the water-borne part of the system is attached to the dock.

11. Does the Hull Protector require A/C current to operate?

Depends. The water pump needs a standard 110V power outlet to operate, but the air gate is raised and lowered manually, with a hand air pump.

12. How does the air gate and the water drainage system work?

A. Air Gate – manual operation:

To lower the air-gate, attach the hose of the gate to the appropriate opening on the manual pump (“deflate” port). Then, pump it until it has pumping resistance. Now, use the included pole to nudge the gate to start its free fall underwater.

To raise the air-gate, attach the hose of the gate to the appropriate opening on the manual pump (“inflate” port). Pump it manually until the gate itself surfaces from underwater, and bubbles are coming from the gate’s rear center.

B. Air Gate – electric operation:

To lower the air-gate, attach the hose of the gate to the appropriate opening on the electric pump (“deflate” port). Plug the pump into a standard 110V outlet. When the air gate is full of water and water begins to come out of the “inflate port,” unplug the pump. Then, use the included pole to nudge the gate to start its free fall underwater.

To raise the air-gate, attach the hose of the gate to the appropriate opening on the electric pump (“inflate” port). Plug the pump into a standard 110V outlet. When the gate surfaces from underwater, and bubbles are coming from the gate’s rear center, unplug the pump.

C. Water evacuation system – operation: While your boat is in the Hull Protector, keep the evacuation system powered the whole time. This will ensure that the water pool is drained after you pull your boat in, and any new water that may enter the barrier will be pumped out as well. Only unplug the evacuation system when your boat isn’t inside the Hull Protector, and during the times when the air gate is lowered. The system senses water automatically, and turns the pump on and off as needed.

13. How much time does the air gate take to raise & lower?

Between 30 sec. and 1 minute manually; ca. 5 minutes with the electric pump.

14. How much time does the water pump take to drain the bottom shield?

For boats up to 30 feet, between an hour and three hours; larger boats take longer.

15. Can a boat be docked at night, does the system have visibility issues?

Hull Protector has a very low (3 inches) above-water profile, so if you need to pull in or deploy your boat at night, you may need to put reflective tape or other visibility solutions on the floating barrier.

16. What’s the depth requirement for the Hull Protector Boat Lift Alternative?

Any marina deep enough for your boat is deep enough for the Hull Protector.

17. What happens to the Hull Protector Boat Lift Alternative in case of a storm or hurricane?

If you want to get your boat on land for the duration of a severe storm, pull your boat out of the Hull Protector and leave the air gate underwater. Given how little of Hull Protector is above water, it’s not affected by storm winds.

18. Are there any restrictions or limitations in using Hull Protector Boat Lift Alternative?

Hull Protector doesn’t have many of the elements that usually lead a boat protection system to require local or state permits. It’s not mounted on the dock, doesn’t include any modifications or fabrication – it can just be roped to your dock, and left to float like a boat bumper. Furthermore, Hull Protector has a very low profile and doesn’t catch the eye, therefore constituting a zoning issue or aesthetic problem for the owner. Hull Protector does not lift your boat in any manor, but keeps your boat in its most stable natural floating state. If you have questions about local regulations, ask your local city hall if they have special provisions for a Hull Protector.


*If your local marina, condo, or other locality regulates or limits the use of Hull Protectors, please print the PDF document below and present it to the proper authorities for approval.

Hull Protector  is not designed to be used in rough water conditions and extremely high current conditions such as around high current inlet channels etc…

*Have more questions? Please contact us for quick answers!

Why Hull Protector Boat Lift Alternative?

Hull Protector Boat Lift Alternative keeps your boat dry while it is in the water! Sound too good to be true? Well, Hull Protector is here! protect your boat from growing anything on the bottom. Also protect from electrolysis! With Hull Protector you can leave your boat in the water as long as you want and sustain a perfectly spotless bottom! With this system you don't have to rely on your bilge pumps to keep your boat floating!

Easy to use and maintain…

Hull Protector Boat Lift Alternative is made of materials that can last in saltwater for over 100+ years! The only part on the Hull Protector that ever needs to be serviced is the barrier shield, this can be serviced by bottom cleaning by a boat bottom cleaning technician. If ever damaged, it can be patched or worst case, easily replaced while the boat is still in it!

No inconvenient boat lift operation…

Hull Protector eliminates the need for a boat lift to protect your boat from bottom growth and electrolysis. Boat lifts are usually over $10,000.00, require city permitting to have installed, usually require pilings to be installed and more... Boat lifts hold a lot of weight on thin cables and that is really scary when you are lifting 1000's of pounds! Boat lifts are inconvenient, and take a good amount of time to lower and raise your boat in and out of the water. You also need to align your boat perfectly on a boat lift before you raise your boat out of the water to prevent damaging your boat. Hull Protector can be opened and closed in seconds, Is simply tied to your dock, and eliminates all the stress of a boat lift. This is truly an incredible system.

Save Time and Money…

Antifouling bottom paint is ugly and toxic to marine life. Did you know your boats value can drop 30% after you paint the bottom of it with antifouling paint? With antifouling bottom paint your boat suffers a loss in speed and fuel efficiency. With antifouling bottom paint, your boat needs to be repainted every 6 months to 1 year if left in the water, and your boat bottom needs to be scraped usually by a diver every month in between (this scraping is also toxic to the marine environment)... DID I SAY SCRAPED!?! Hull Protector Boat Lift Alternative protects your boat from all of this...