Before I changed my mind about having a trailer unit I looked at a couple of boat salvage yards for trailers. There were MANY trailers that were sturdy and CHEAP! Most needed new tires and would get bearing repacking.
I wonder why so many people are infatuated with the Harbor Freight/Northern bolt together trailers. Those are pretty low capacity, small tired and, to me, a pretty inadequate platform to start from.
Boat trailers are usually galvanized too.
Why don't people use old boat trailers as a build base?
Tom