So I had an exceptionally warm day and I figured it was perfect to remove the shrink wrap and throw the boat in the garage. I had spent the fall waxing, cleaning, and protecting every surface inside and out and then I find this.
So far it looks just like surface mold and a preliminary cleaning with 3M and a magic eraser did OK. Any thoughts on the best way to get the funk off and not trash my interior that once was in great shape?