Thanks john but I don't believe it is stress, Ive had those pimples and they are more of a glass issue. This boat actualy had ben glassed ans epoxied for months prior to finishing. The pimples aren't the clasic white of stress damage but rather look like brown growths/ mold induced. the brown stuff cleans off to a degree but the rough pimple is still there. It's also spreading down the length of the boat. I will try and take a picture and get it posted although that will probably take a week or so.
Cheers
Rick