Sorry, didn't see your tow hook post before my own. In Portland, I've been left alone with the Porsche. But, got nailed for my 335i, also w/o a front plate, by a bored motorcycle cop. He told me how to wipe out the ticket and fine. Take a picture of the front plate installed, show to the traffic court judge. I did so, using the tow hook insert, and all was wiped from the record, including $155 citation fee.
Pure revenue generator here.