Ended up making two trips. First time around after loading the panels I rigged a gin pole in the center of the bed and used a ratcheting 2" web strap to hold up the rear 6' of the panels. looked good sitting still, got a bit bouncy if i went too fast......went back, got a sack of feed, put it on the end for ballast, worked fine and I took it real slow. Lest you think otherwise, the panels were also strapped to the bed six ways from Sunday, so even with a failure they wouldn't spread all over the road.
Decided I wanted 3 more panels. Used MikeC's bolt cutter suggestion. No problems.
Thanks to all.
Oh, stock trailer in in 6' of snow, 50 yards from any easy access.