Hi Tim,
Now that you`ve opened this "can of worms", I`d like to know how to convert the VYC rating figures to ISAF, since that`s what we`re using in SA. If you can tell me how much time a Tornado (new rig), as well as F18 gives the Mozzie spi per hour of racing, and how much time you give the Hobie 16, I can then check how close the VYC rating is to the ISAF one and see how they compare. Of course one is based on recorded performance and one is theoretical, it would be nice to see how they stand up against eachother. All things being equal between our boats, I just need to know the all-up sailing weight of your boats (average between top 3 Mozzies) in solo configuration (since you mostly sail that way.), since our boats are actually quite a bit heavier than yours from the information I have - I`m guessing you are 85-90kg (solo) all up, whereas our boats are on 105-110kg in sloop rig setup. (We have bullet-proof sails, but they weigh quite a bit , and our platform weight is a few kg over min. weight.)
We are sailing off a ISAF rating of 1.14, yours would be a bit lower with a lighter boat, I can work it out if you send me that info.

Steve