Line - X

[oldfielder]

Check the Durabak website-if you don't mind doing the prep, you may save yourself a bunch of cash over having it sprayed. The reps there are very helpful if you call them. It's about 120 a gallon which should be just about enough to do your deck.
Warthog-who has his whole project on classicmako.com-used it, I'm pretty sure, on his deck. It looks great.