Coming from a rear-only plate state(thank you Commonwealth of PA) it is easy for me to suggest not hanging a plate at all in the front. Odds of getting stopped for that small infraction, small. And the beauty of the front end of our lovely coupes should blind the police to the missing plate.
One could always claim the plate was stolen and you are in the process of applying for a new one. Go immediately to the license bureau and start the process. If your state is anything like my Commonwealth it will be weeks, months perhaps before the plate arrives. Or just bolt on the missing plate.
For the last five years I have been running with a lovely no longer issued PA antique plate from a long gone Bavaria. Reason, the current PA antique plate is adorned with a full color image of a Model T or A? who knows or cares. I tried hiding the ford with a laminated photo of my coupe but it was still ugly. I'm a rambler, I'm a gambler but I'm never that far from home.