well we buy a ton of throw away brushes from dollar tree and for the first coat we only do select portions of the helmet at a time and then use a heat gun on those areas. it only takes a few minutes to cure so we can watch and prevent warping, once we do the full helmet with a thin coat, we apply a heavy second coat and repeat! (and watch for drips!) hope that helps!
That helps a TON I guess I might need to purchase a heat gun. Though I still gotta wait for the weather to warm up and stay warm. You guys are a pair of beasts at this. I am loving the progress.