cleaning the outside of an aluminum boat?

[waterfoul]

My boat has a water line mark all the way around. Is there anyway to get rid of this??

[DangerDan]

I have some of this:

http://www.zep.com/ProductCatalog/ProductSearch.asp?img=search&searchTerms=aluminum&pageNumber=8

Cleans like a white tonado!!

[waterfoul]

But it does not appear that the average joe off the street can buy this product.

[scottyhoover]

http://www.larsensales.com/