Hey you missed the point if it's only about Yardsticks.

Don't forget sailing with the spinnaker is twice as much fun .

Besides if you've only used the spinnaker a few times, you haven't even got the Mossie with spinnaker to top speed yet. You wouldn't believe what the Cat rigged Mossie with Spinnaker is capable of, which includes sailing to it's current Yardstick.