Aluminum or steel trailer...

[gostovp]

I just found this older thread...I picked up a new (to-me) 2023 Can Am Defender and debating this same thing. I want a 14 or 16' tandem axle trailer for hauling it. I live in WI so the roads are heavily salted. Don't plan on doing much winter trailering, but we do get snow in the fall (deer seasons) and the spring time, so trailering in salted roads is a possibility. I get mixed feedback on both aluminum and steel trailers (and see a lot of both types around here). The anti-corrosion resistance of aluminum (albeit some good feedback on build quality in this thread) vs cheaper cost and likely better structural integrity of steel (with the higher likelyhood of rust and corrosion)...
If I did go steel, are there DIY treatments that are affective to help mitigate rust (like Fluid Film and whatnot?)