I would just take a pic of the offending vehicle & pass the info to the police. Not that the police can do much There is however an Aust website that we can put the offending vehicle licence plates on. I will have to find it again on the BNA forum.

Confronting the drivers won't do much except make matters worse. Why waste your time stalking the offending driver when you can rant here on TE You know when you confront the driver they're just going to be ignorant twits.

this is why i'm fond of singletrack..trees don't talk back.