Originally Posted by A.Winthrop

.
I've used styro containers to keep dry ice for popping dents and
dings out of my C&V car hood after a tree branch fell on it.

Originally Posted by himespau

I've always head the U police around here use a long 2x4 as a lever and just pop the u off. Don't know if it actually works or not, but if you've got an old 2x4 lying around, it might be worth a try...