Gary Be it as it may. I've seen many trailers rust out on everything from a pontoon boat to a ski boat. Too many issues with wiring to count. I'm happy you've had good luck due to your dilligence of washing. But I still won't recommend anyone using anything but rust proof materials especially a Tracker product. I talked to the guys who keep my friends son's boat and they confirm. I'll respectfully agree to disagree. You start checking other forums. A boat trailer is a critical componet of your rig and a aluminum or galvenized trailer is the cheapest insurance you can get. Brakes need more care also. It boils down to you pay your nickle you take your chances.
fatrap
http://continuouswave.com/ubb/Forum1/HTML/019482.html
What is the differences between galvanized and aluminum trailers?
Corrosive salt-water environments are very hard on a trailer, so most boaters in these areas choose either a galvanized or an aluminum trailer.
A galvanized trailer is basically the same steel-tube construction as our painted trailers, but the frame and component parts are hot-dipped galvanized. Galvanizing is a zinc coating process that makes steel more corrosion-resistant. It is not a permanent solution to the corrosion of steel, but it does slow down the corrosion process. The zinc coating simply serves as a sacrifice, but it will eventually deteriorate. This deterioration is accelerated by exposure to salt-water, high temperature, and high humidity. Fresh-water rinsing will prolong the life of a trailer but it will not entirely stop the corrosion process.
Aluminum trailers have an aluminum frame which is lighter, resulting in better gas mileage. Like steel, aluminum will also degrade over time, but it remains more visually appealing because the corrosion appears as white dust, rather than rust. Aluminum has more flex than steel, so ShoreLand'r aluminum trailers feature galvanized steel parts in key areas to maximize the frame strength.
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