I recently got an inflatable dinghy and the bottom was covered in barnacles and other detris from apparently lying in seawater for some time. I scraped most of this off but there is still some residue remaining and also lots of other dirt and filth from a total lack of care by the previous owner. Anyone have suggestions as to cleaning the sea creature residue from the bottom material and otherwise making the dinghy a bit more presentable as well as shipshape? ps. she is mine now, such as she is, and I would like to keep her well maintained and functional. Repair wise and all manner of operational capability, the boat is fine. She just looks a mess. Thanks.