I had to store a partially built S&G for a couple of years outside and although it was wrapped up, the wrapping leaked and now I've got water stains all over the un-glassed deck. There is also some black mold stains in a few places. Is this sand-out-able or am I facing a paint job for the deck? I'm afraid the outer layer of the marine ply is too thin and the stains would go all the way through the layer. I guess if I can't get the stains out I could just stain the whole thing but that's not what I really want to do. Thanks for any help you can give.

Paul Jacob