Just got a new EZ Loader custom aluminum trailer for my Champion. I've never had an aluminum boat trailer, but I've had an aluminum Featherlite utility trailer for several years. It obviously has never been dunked in water, but it has been outdoors the entire time I've had it. It gets mildew on it and I suspect the surface has some patina on it at this point, but it changes so gradual it's hard to say just how different it is now compared to new.
So I'm trying to understand what, if anything I need to do differently with an aluminum trailer. I probably won't be dunking in it the brine often, if ever, simply because the boat is not exactly built for that environment. When I picked it up, one of the people at the dealer said to unplug the wiring from the tow vehicle before getting it in the water to prevent electrolysis - never heard of that before.
Any tips or things to be aware of in caring for an aluminum trailer?