A guy I work with is getting a in-ground pool dug and they got to the point of spraying the gunite, and while they did a pretty good job at masking off the area, some of it still got away and covered his truck. It's pretty thick in some spots and the whole truck feels like 120grit sand paper. What would be the best route to go to get it off? I'm gonna try clay on the windows and maybe a small section of paint to see if that'll work. I also have a polymer rubber clay pad that I'm gonna try too. I know I'm gonna have to polish it afterwards, but I would like to inflict as little damage as possible. Any thoughts?