Actually Doc that is the OEM tape line that is on the Challengers. That is all the OEM Gelcoat. You should probably be able to hand buff all that out with some heavy cut compound and a ton of elbow grease. But, if your hand is steady enough or use some blue painters tape and tape just over the white tape you can buff it with a power buffer, much less effort and time. Tape the entire rub rail off too, the power buffer will put the compound all over it and that is a pain in the backside to clean off.