Well last night had a bit of a falling out with a mate (ex mate now i guess) of mine, and when i returned to pick up my car in the morning it had been keyed all down both sides and on the boot (quite badly). I'm 99.9% sure it was my mate that did it. Unfortunately there's probably no way i can prove it, but naturally i want to make him pay for the repairs. What would you guys do in this situation? (besides taking to him with a baseball bat - which has crossed my mind!) Thanks.