Ok then for example at my club tonights racing forecast is about 5 - 7 knots wind, typically triangular courses where I can't quite( but almost can ) carry my spinnaker, would the C0 then be the sail of choice.
If we say ran 15sqm of C0 what would happen to our SCHRS handicap no, better or worse.
With a TRUE C0 (so passes 75% rule) the rating gets slower to 0.989 (from 0.982)
If the sail FAILS the 75% test, then it gets a little more complex as we rate it as a Jib and thus need the luff length.
using the pole length of 3.5m and max-hoist of the spi (7.5m) and 90 degree pole angle to mast we get a max luff of 8.27m; so make it 8m to allow a bit of pole hight.
a 15sqm "jib" flying on the pole with a luff of 8m makes the rating 0.781!!!!!
This is because SCHRS only rates sails as either Spi's (Pass 75% rule) or Jibs (do not pass the 75% rule). We rate a Spi as being used some of the time and a Jib as being used ALL the time.
