People can be such... You know what I want to say!

[Ldub]

It's frustrating but you're playing with fire when you retaliate. As Trek said, chances are they won't even learn anything anyway, and if you're unlucky enough to get caught in the act, you may find yourself on the receiving end of don's dad's fist or in a police report. Plus there's always the chance that the offender gets back to his car before you do, finds your smart *** note, and drags a pocket knife down the length of your cladding to make HIS point. And let's face it, chances are that the body panels are more readily available on his Tahoe than your VX.

I care not if they learn anything...my mission with the roofing nails is co$t & inconvenience.
The increasing severity of the infraction causes the nail(s) to be placed closer to the sidewall. (possible new tire, as opposed to a flat repair)
Makes me feel better, gives them a "bad day"...

Win-win in my book.