Ahhh, but the Nacra 6.0 is also a boomless rig, and they rigged those huge 425 sq ft spins on them at one time (I know I did). I put an F18 spin on a a hobie 17 for $585, so I know it isn't that bad. When you decide to do it, shoot me a pm or e-mail, and I'll walk you through all the details. All in all, you can do everything in a saturday afternoon with a good drill (if you have all the parts handy).
Trey
N20 314
Layline Rigging
www.velocitysailing.com