Several weeks ago I did a Penetrol treatment on my 1981 Pearson 323. After approximately four coats it looked FANTASTIC. But... a week later after a few heavy rains the non-skid surface turned a mildew gray. I thought that a good marine soap would clean it up but I also had to use clorox and it is still appears to have mildew on the non-skid areas. I didn't get a chance to put any type of sealer/wax on the surface because hurricane Charley paid us a visit so I anchored her out. What is a good recommended cleaner and wax as a final coat.Thanks,Tarheel