Whilst we're getting into the realms of Class and Association Rules I would like to point out that if you intend to travel to Zandvoort be sure to take a saw with you.
At present the length of your spinnaker pole mustn't exceed 3,500mm and project further than 800mm past your bows. Most modern F16's that I have seen flaunt this rule including the Blade. So unless this 800mm measurement rule is retracted then there will be a lot of unhappy sailors cutting their poles and altering their stays to meet the required measurement.
Now that would be a great start to an event.