Hi guys I have read through all of your answers and concerns about steel and aluminum trailers. Well let me start by saying I have been in the N.D.I. Non-Destructive Inspection field for a long time now and I am also a avid boater, fisherman and crabber. I have been through more fishing and crabbing boats both aluminum and fiberglass than most people have had cars. But let me lay some metallurgy on you. Steel will be heavier than the aluminum inch for inch. So aluminum may save you some gas when you are towing it down the road. But they paint the steel ones with what should be a good epoxy based paint to reduce stone chips and other harsh abuse. The aluminum one should have a clear coat on it. But lets throw a uncoated bar of steel and a bar of aluminum uncoated in a tank of salt water. It will be plain to see that the steel will rust. How fast will be determined by the amount of iron in the steel. The aluminum which is a alloy will start to get innergrainlar corrosion or exfolyation within hours. If there is any pitting in the aluminum this will happen from the inside out and you won't know it until the beam cracks. Do you guys remember the Aloha jet airliner that landed with half of the roof missing? Innergrainular Corrsion. Now this is not to say that the same thing will not happen to steel, It is just more obvious with the steel returning to it natural state of iron/brown rust. But it will take longer. Where aluminum is a little harder to see because it is a alloy. I have two galvanized trailers for my fishing/crabbing and duck boats which may look gray but they are in great mechanical shape and the wellcraft seats on a painted steel trailer. Which gets a sandpaper scrubbing and primer than a paint stroke after every season. I have had that trailer since 1986. The fountain I just got also seats on a painted steel trailer. But hey aluminum just looks cooler. Its your choice. Isn't America great.