CUT IT UP!
Heck Ya!
I'm amazed at the amount of Spartan trailers that pop up for sale each week on Facebook, CL and other forums. Same with Airstream. Most are gutted with a few drug out of the woods.
The dream of these aluminum trailers quickly turns into a nightmare once the owner guts the trailer. That's when reality hits and they realize how expensive and what a PITA it will be to "Put It Back Together"!
Most Spartan trailers are very LONG in length. I have seen several that have been cut in half and significantly shortened to make a very nice and manageable size trailer. Once again. Lot's of Work, Lot's of Time and Lot's of Money to build any old aluminum trailer.
I have considered building a pontoon boat camper several times with an old junk Avion or Airstream. Much more fun and useful as I do not use my 1957 Avion R20 camper trailer near as much as I expected I would.