No anti fouling needed. But I would be worried that it will tip over in a storm!

The Basta Floating Lift offers the same protection as a bottom-resting lift, but with several unique advantages. As @LancesterHardwood mentioned, the lift eliminates the need for antifouling paint and reduces corrosion of the boat’s subsurface metal components. It also provides easy access for hull cleaning, maintenance, and even repairs without having to haul the boat. Another notable advantage is its stability. What is not clear in this video is the 6’ depth of our wave-attenuating floats. With significant buoyancy under the water, the lift remains steady and upright. In open water situations, the Floating Lift eliminates strain on the bow eye when directly mooring it to a buoy. With only the lift directly attached to the mooring, the strain is on the lift, not the boat. Having your boat high above the water eliminates the potential for waves breaking over the bow and potentially sinking open bowed boats like ski/wake boats or center console fishing boats.