ok, well that means no dirt, shoes, fishing equipment, rocks, sand, people, animals, water that could potentially contain sediment, coral, or storage items anywhere near it. So... what to use it for... what to do with it when not trying to figure out what to use it for...I guess if you made a dry dock out of cellophane wrap it would hold it and not scratch it... just don't let it touch an actual dock and board it about 30 feet from shore.If its acrylic it will intime be one big blurr of scratches ESP on the bottom which is the selling point.