I have had 2 aluminum trailers, both Worthingtons. The first was a 6.5x12 single axle. I sold that after 11 years for $200 less than I paid for it. My new one is a 6.5x18 tandem. I have been well pleased with them. I don't weld so I would have to hire any modifications done steel or aluminum. I also seldom use a trailer in the winter, so pitting is t an issue for me.
Will