Letsby Avenue
I hope you don't mean me!
Only dent I have ever put in a helicopter was when both hydaulic systems failed on very short finals to a grass strip in an aircraft that could not be be controlled without them. Incidentely, I flew it out 2 hours later, back to camp fixed, thanks to those wonderful chaps in the REME and of course to the person that designed the undercarriage.
However, on another occasion I did manage to lift to the hover, do a 360 deg spot turn with a bonding lead still attached to the aircraft much to the shock of a German run TSW unit.
