Wouter and all-
As some of you know, Geert has the use of only one arm and we quickly figured out we were faster with myself as crew. One must remember that particular Nationals was early in the F16 development and the snuffers had "kinks" that were not worked out well then and most of the crews (male and female)were not used to crewing with a spi. Dave and his crew practiced the whole week before together on that venue and were the most practiced in the event. Their boat was also the most "aerodynamic" not having a snuffer bag aboard. By the way, Gordon was crew for Jennifer in that event so I hope you didn't insult him Mary!
In terms of furling, I agree IF we could develop a nice spinnaker (at least a "spinnaker" as far as the rating rules go because all rating systems I know of severely handicap a non-spinnaker headsail) that could be furled, that might appeal to a group of sailors that are intimidated by snuffing/bag launching and or the singlehanders. In that regard, as mentioned, it is not against our rules to furl a spinnaker.
In fact my new Goodall spi even has a luff string so it might be a natural for me to try this on-
Regarding a spi specifically designed to be furled-
I wonder Wouter, is it "illegal" to have battens in a spi or would this be handicapped severely??
I'm thinking if one can put battens in a spinnaker could one not use vertical leech battens to support the roach while still allowing furling
Anyway, just some thoughts! Great discussion- You can tell it's too cold to sail most places (or too rainy every weekend here lately!)-

Kirt