ok, firstly you have to get locking caps. I would think about rerouting spouts to fill tanks or locks on fuel doors. Keep in mind Anything you do to them including ink is assault.Go look up the basic elements of the book, Art Of War, then apply! get even! hit them where it hurts. Anonymous letters to the college, screw their cars up, your handy, go cut come electrical wires, we all know thats a bit@h to deal with. Listen, I would rather to fight but soceity does not work like that anymore,(for the most part) you will be sued! like my friend who spent 10,000$ for punching a guy who deserved it. Im not saying snitch, i would never condone that, but I always get even....