Turns out it's really not that difficult:

http://www.warpig.com/paintball/technical/anodize.shtml

One possible snag is the need for an immersion tank the length of a mast. I had to solve this problem once for a 40' long chromate conversion coating tank. We simply bought four 10' long pieces of 6" PVC pipe at Home Depot along with two caps and three couplers, glued it all together then sawed a long chunk out of the top to make an open top tank. Put it in cradles on a long bench and went at it. I even put in a drain valve at one end cap by drilling a hole and tapping it for pipe thread.

I need to re-annodize my crossbeams and mast as well since tiny flecks of corrosion are starting to pop up.
I know if it sees more saltwater now, the corrosion will really take off and scrap the mast.

Jimbo