Well, my "dew theory" is partially debunked. The first pic below shows the NORTH facing side, which has NO OXIDATION... but the morning dew forms exactly like the other side... outlining the coach "skeleton". I'm thinking it has something to do with the interior wall temperature being different from the outside... at least until it warms up. Then the "skeleton" outline disappears.
Theory #2: Maybe the temperature differential causes the gelcoat to oxidize in that pattern??
The last two pics show "before and after" of another section. I'm quickly finding the major ingredient needed for this job is ELBOW GREASE!
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