Or use painters masking tape. The blue stuff you can buy cheap at home depot. I have done it for my car, when travelling to car shows, it comes right off, with no residue. Will not mess up the paint. Its cheap, easy to put on and off, your corner store will have it.

Obvioulsy just tape up the areas you do not want road grime to stick to, example the bows, ect ect ect...