I think the "trick" may be to have the mast-beam and mast further aft than we're used to. Maybe with the boom hanging out past the aft-beam to get enough sail area to make the boat fast when sailing uni-style. This way the spinnaker pole won't have to be so far past the bows and the CE can be more centrally located on the boat when all sails are flying (less bow-burying). I'm still thinking about a true roller-furling jib (just a monstrously large one) that can be used at tight angles upwind. However I don't know how well this sail would perform downwind....