we are going to paint an old fiberglass boat to look like the general lee. We are using vansickle allis chalmers orange paint from farm & home. We just plan on lightly sanding the boat and them putting the paint directly on over that. Is there really any need for a primer? Also we were planning on using a hardener, is that a good idea with implement paing such as this? Basically just looking for some suggestions before we paint next week. Thanks!