That must be really frustrating! Still all you can do is try and gather a basic fleet and sail. I would contact all the active cat sailors you can and promote a combined sailing fleet. 10-15 boats is a lot of fun no matter what type they are.

GYC sails twice each month, nine months of the year and it is usually a mixed fleet of around 10 boats. I have to admit to being AWOL recently.

I wouldn't worry about certificates and the like until you have a more active fleet.