An overwhelming amount of information can be found @ boatdesign.net - look under fiberglass and composite boat building. For painting, They seem to favor Awl-grip, and have numerous threads describing techniques for applying.

I have brushed on some dupont automotive paint that has held up extremely well, and when thinned properly, looked fabulous. It was quick to dry so I didn't have any problems with bugs. I have had mixed results with interlux products- the best results coming from their Brightside product line. I found their Toplac difficult to work with.
Rob