I've sprayed it on trailers and other equipment. It sprays well and makes a nice finish. Reduce 10-15% with paint thinner and have at it. Two light/medium coats 20-30 minutes apart work best. I always prefer to use a primer. Rustoleum red "damp proof" primer works well. Same deal on spraying. Thin 10-15% and two light/medium coats. The damp proof primer takes a day or more to dry. Sun and wind can speed this up a lot. When thoroughly dried, it is easy to sand.

Two drawbacks to be aware of. Because of slow drying, it will likley pick up bugs/dirt. With care it won't be a big deal. Also it hardens slowly. It will be tender for a while. Again, sun/wind helps after the initial dry.