I hooked the underside panel on a cement barrier that was hidden in the snow in a driveway. I simply went to Lowes and purchased sheet aluminum large enough to cover the tear. I cut the piece to shape and pop riveted it into place, starting at the top edge and working my way down the sides and then across the bottom. You would never have guessed it wasn't original except for the shine.
My insurance took care of the repairs but the shop was impressed with my temporary fix.
74 Airstream Ambassador International
94 Burb Ontario plate "TIN HUT"
02 Jetta TDI
Logan the Large hairy Golden Retriever
It's a monocoque thing
You wouldn't understand