The Hurricane 6.5 was a total loony machine.....
Last time I was at white Formula there was one sitting on it's trailer.
I've sailed around with them once ona very light wind East Coast Peirs Race and they ran a 50+ sqm code zero/reacher in lightwinds and sailed upwind quite well with it.
A very scary bit of Kit and Rob White called it a bit of a monster, so that gives you some idea ! He actually called it dangerous after he got hurt in one pitchpole and ended up nearly getting sliced up by all the rigging on the Spi pole.
a very mad machine