I am thinking mast head kite <img src="http://www.catsailor.com/forums/images/graemlins/grin.gif" alt="" />

Of course I drew up the mast head reacher option! I have just purchased an 8.4 meter luff, 4.2 meter foot roller-furling 2.5 onze kevlar hooter from a skiff sailor. Great price and it looks to be perfect for mast head. He was a sail maker experimenting and kept the sail when he sold his skiff.
Not a spinny but I am going the Rick White hooter way.

This will be set up on a pole that breaks down just ahead of the jib foil. It will simply plug in and clip to the bows and tip to clip on the big sail. Nice to get rid of for high speed runs.

I do things on a budget and so want to try an idea before I commit to expense of purpose built sails. The sails here are the old pin top (25 years old at least) cut down to square top shortened as you can see to the hounds. The boom was shortened by about a foot and the roach has been cut back extensively. I have also chopped a foot off the mast base to lower the boom. The jib is an old Buffalo 14 fully battened as I was wondering if I wanted to go without barber-haulers and thinking through roller furling.
I have settled on roller furling jib with barber-haulers and Chip buck has designed the main and is making now and sending the new sails this coming week.

I have been building up carbon components including an A class mast and Tornado mast tube for beams. I figure I can cut out 20 kgs off the platform weight which stated out at 115 kgs with the longer mast.

These hulls have been hammered by big Kiwi brutes in crazy conditions and have many repairs. So I am also waiting for excellent hulls......unless I just design my own...but I like the retro, hot rod thing.