Gidday Rob!
You can pretty much use anything at all, depending on the level of finish you want to achieve.
At the bottom end of the scale, if you don't mind a little texture and a few (well a lot) of brush marks, you could use good old plastic house paint.
At the top end, a sprayed two-pack of any description.
With all systems, you'll need to use a primer/undercoat and unless you are sure of the epoxy you will need to dewax the epoxy surface first.
On our PDRacers we went the middle route, and used a Wattyl turps based primer-undercoat, but the marine one from International (Precote) is a much more forgiving and easier to learn product.
We used International Brightside top coat, which is a fantastically hard glossy product and even though it's brushed on, looks almost mirror-like.
All paint systems will reflect the amount of sanding and surface preparation, and I've had Michael here working his already small bottom right off. (Perhaps I can send him to you next?
).
No need to sand any finer than 180 grit when using wet and dry, or 220 on a random orbital sander.
I hope the question means that you're preparing for the trip to Goolwa!
Don't be afraid to turn up with an unpainted boat, our "white" ones have lived in their primer "undies" all year, and that means that we've now got nice fresh paint!
Cheers,
P
Painting an epoxy coated boat. 
