Yes, it will work on anything if you want to sail it dead downwind. It will also work on a reach, but just not as high as we usually reach, with our high apparant wind angles and all that. And the pole would have to come off the mast at about a 90 degree angle, ie. off toward the shroud (like a mono dinghy going downwind) if you want to go dead downwind, our poles are stuck straight out front so they wouldn't work.

The early Corsair F27 Trimarans used a symetrical spinnaker with a conventional pole on the mast, just like any monohull would use. Then some smart butt (Eric Arens?) put a pole on the bow and a big asymetrical spin. on it, and the rest, as they say, is history!