Believe it or not wiper circles can come out. It’ll take 60-90 minutes or so. What isn’t going to come out are rock pings. Mine had hundreds of itty bitty little pings, almost like it went through a sandstorm, and no amount of polishing would get them out. But the swirl where a wiper blade fell off in a flash storm and the rain was too heavy to shut it off polished out completely.