WOW- I'm very jealous of your find!
Go mr. bill! I've painted my Dirigos many times, many colors. (Mostly camo.)
Surface prep is the key. An even, fine sanding and proper "wipe down" helps me everytime. I wash it first with a hose, then wipe her down with acetone or thinner.
Painting right away is also important so you don't get dust or debris in the paint.
Its a good warm day project if you don't have an indoor shop or whatever.
I reglassed mine one winter in my living room and then painted it there too when I was single. If you hear of any other Dirigos let me know. Oh yeah, I used an epoxy based spray paint originally made for metal that works great. Let me know if want any. While your at west marine ask the people there, but be careful you might get
the new guy from k-mart.
Good luck mr. bill and watch out for sluggo!
All the best- Bilnik