A few years back, I had a minor bingle with a xd falcon sedan. The guy was nice, and we did the dodgy fix on it, so no insurance stuff to worry about.

I had the front bumper in the back seat of my 1000 4 door, sticking out the window, and the bonnet strapped to the roof with ropes through the windows. I ran the ropes through the windows, got it, and then tightened it all up from inside the car.
Once i got to about 60 km/h the bonnet waould lift up from the wind. So I drove home with my arm out the window holding it down. It was only about 30 mins on the road so not too long thankfully.