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The simple, easy-to-use Miracle Cloth worked best. Flitz did nearly as well, but it’s expensive. Turtle Wax earns Best Buy honors.

The Miracle Cloth cleans, shines, and doesn’t leave behind any residue in the cavities of metals like some of the liquids and paste cleaners.

Recent issues of Powerboat Reports have focused on the best products to clean and protect fiberglass. We’ve tested waxes, nonskid cleaners, barnacle removers, waterline stain removers, and water-spot removers in the span of 18 months. So now that your fiberglass is clean and looking good, you might want to check out the chrome, stainless steel, and other metal components on your boat. Are the cleats, bow rail, and portlight frames blemished with ugly rust stains and pitted with corrosion? No worries. We tested 16 metal cleaners and came away with some clear winners. …