Can a standard rotomolded cooler hold a person's weight in the water?
Yes. A sealed 45-to-75-quart cooler displaces between 100 and 160 pounds of water, which generates sufficient lift to keep an adult's head and chest clear of the surface if held across the chest. Commercial 150-quart marine boxes, like the ones used by oceanic fishermen, can fully support the deadweight of two adults sitting inside an open container, provided the hull stays level and free of water intake.
How do I stop my floating cooler from flipping over in river currents?
Keep heavy cans and dense block ice packed squarely across the floor to establish a low center of gravity. Never overload the upper storage trays or let the tow rope tie to high lash points on the box. Tether the cooler low near its waterline or use a specialized floating sled that surrounds the chest with a wide, stabilizing air tube.
Will lake water seep inside my floating cooler and contaminate my drinks?
Budget pool floats with simple velcro or zipper flaps leak dirty surface water when subjected to small wakes. To guarantee contamination-free storage, use a waterproof floating container that utilizes a compression rubber gasket and locking T-latches. Ensure the drain plug threads feature fresh Teflon tape or a functioning O-ring before launching.