Article: Rust busters: a new electronic rust zapper helps prevent trailer corrosion.

Trailer manufacturers have been at war with corrosion since the first rust spot popped up like an ugly pimple on a painted trailer. Corrosion had the upper hand in this battle for many years thanks to gravel roads, U-bolt scars and the use of nonmarine-grade hardware.

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Twenty years ago, the painted trailer under a well-used boat often looked like it had been shotgunned and soaked in salt water. The best defense for boaters who trailered a lot was to stay away from trailers that were custom painted to match their boats and buy an uglier, but more practical, galvanized model instead.

Trailer makers counter-attacked with more ...

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