[quote=Headhunter]+1 for gel oxidation, though paint can oxidize as well. If your hulls are white and not-yet-painted, there's a host of products and techniques to restore them. I've been a big fan of Collinite cleaner + wax for years.
[url]http://www.westmarine.com/webapp/wcs/stores/servlet/ProductDisplay?productId=24231&catalogId=10001&langId=-1&storeId=11151&storeNum=10104&subdeptNum=10379&classNum=10380[/url]
[url]http://www.westmarine.com/webapp/wcs/stores/servlet/ProductDisplay?productId=24224&catalogId=10001&langId=-1&storeId=11151&storeNum=10104&subdeptNum=10384&classNum=10386[/url]
This stuff's pretty amazing for hulls that are absolutely trashed: [url]http://www.westmarine.com/webapp/wcs/stores/servlet/ProductDisplay?productId=21614&catalogId=10001&langId=-1&storeId=11151&storeNum=10104&subdeptNum=10384&classNum=10385[/url][/quote]
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