I didn't say anything about having your own start. I said your own CLASS. If you all register as F16, and if you make sure the race committee knows that you are racing as a formula class, Portsmouth ratings are irrelevant. You are racing the same as though you were one-design.

But, as I say, most regattas require five boats to be considered a class. And if you do not have enough boats to be scored as a "class," they WILL go by the respective Portsmouth ratings of uni and sloop when scoring you within the Portsmouth class.

By the way, if that particular regatta was accepting four boats as a class, then it was the fault of the F16 sailors for not telling the organizers that you were all racing as a class and explaining that that is how the F16 class works.