Members of the Tornado class pushed for spis in the games. First olympic games with spi on the T was 2004, but development started before 2000.

Hobie Tiger had a spi option. F18 class was started with a spi as standard equipment.


I would not say that events pushed the technology as Mark seems to argue. It is sailors who push the egdes and work on stuff they think is fun/interesting. Equipment is built and then we get the events. The sparkplug is the idea and the doers who build and market.

With the AC and the C-class now going foiling, I am pretty certain that foiling on cats will catch on big time.

Please do remember that cat sailing is enjoyed in Europe as well when finding the "source of all spis" on cats in the Worrel and other US events.