Washing full body paint Key Largo.

What would be best used to wash the full body paint camper? Always used a wash brush on our others. But then again they did not have auto paint and clear coat. So want to buy something that makes the job take less and still do a great job.
Pete

Personally, I use a 100 % Cotton Washing "mitt" that is built like a pad on our MESA. Goes on the end of my extension rod. The wash pros in the area here tell me to avoid anything that isn't cotton as that has the ability to put "swirls" in the clear coat.