Those covers in FL are now fully illegal (Oct 1) along with most license plate frames.

Have a friend who got pulled over recently and given a warning for the clear cover on his plate. Apparently, they can be a felony in some cases.

I recall on an old Top Gear episode years ago, in the UK, people were selling mud in a spray can. You apparently sprayed the mud up the bumper and across the plate so it looks like it’s just slung mud, but it just so happens to block the plate. Plausible deniability in a can…