Would it be ok to paint plastic bumpers with smoothrite?

would it dry without brushmarks?Would it be ok to paint plastic bumpers with smoothrite?
It would take ages to dry and would look really bad.Would it be ok to paint plastic bumpers with smoothrite?
you can buy special paint for plastic bumpers if you put any other paint on them it just peels of an looks a real mess
It is not made for this, as it is a metal covering paint. I suppose it would be OK as any paint you will always see brush marks unless you are perfect at painting