Happy Holidays.

For those who use bumper plates on a concrete surface, do you place a layer of protection? (so that the bumper plates don't get beat up).

I want to clean and jerk on my driveway, so I can't build a platform. I was thinking maybe a small piece of plywood(4x4) that I can place and remove. Again I want to stress that I won't be able to build a platform because it is on my driveway and the wife would kill me. Also I do have a platform in the house but the ceiling is too low for clean and jerks.