On top, but you painted the bottom didn't you?
P.D. nice blue hue! If you're light weight its easy enough to swoop in at low speed then nose up and let the butt touch first with the throttle. Don't try to skid it in on grass or you'll go home in a few pieces. Me? I lay on a sheet of cling wrap then layup a couple layers of carbon cloth, let set, pop off and trim to shape with siczors and glue on with RTV to the bottom for a skid pad on black top. (most of the time)