I am in SC also.Covered my 2013 vibe this fall for the first time.I have tried waxing the trailer several times a year,using turtle wax ice,nufinish,and recently 303 protectant.None of these products seem to last longer than 60 days in our climate. The trailer is treated with 303 right now and covered.Hopefully this will make a big difference.The downside is that the cover is hard to install and remove.My. Trailer is a Vibe 6504 (20 ft) with a fiberglass roof. I hope that the cover will prevent chalking of the roof.