The last two times I trailered the rocket, I strapped ends of handlebars to bottom latch point and compressed front fork till tight and stable. Then, two straps to rear, compressing rear shock. Kick stand up as bike was supported by straps. Bike floated on trailer as suspension worked in limited rage of motion.
Feel badly for your misfortune, hope you can find really good welder and gets lucky on fix. Used parts search might also be considered as backup.