I straightened a big truck bumper by picking up the rear with a fork lift. I've straightened loading ramps by putting them on blocks at each end and running over with a tractor; big truck etc, easier than all the cutting and welding. raise the lift gate, hang on a 4 X 4 and back into a big rock. , IN high school we were using a power pole to pull out a crash. but were sparking the power line wires.