For uses such as hauling and launching boats where corrosion and rust resistance is a factor; aluminum has its advantates. The weight of a is distributed over a much larger area as opposed to a tractor. The cost of an aluminum trailer is about 1/3 more the cost.

Aluminum does not stand up to fatigue cycling nearly as well as steel. Aluminum flexes much more than steel. I recently learned this the VERY HARD way when a 110 gallon truck bed diesel fuel tank (full of diesel mind you) cracked a weld while crossing a stream on my farm and I was 120 miles from home. Fortunately the crack was only 6 inches long and near the top of the tank and it did not leak fast. We didn't notice the leak as such until I got home. We thought what appeared to be steam from crossing the creek when in actuality it was smoke from the diesel dripping on the muffler.

Get the steel trailer; you will be very glad you did.

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