A. In most years, the data declarations made for one year will be the same as those for the next year, and that data will auto-load with your renewal application. Declarations for mainsail and spinnaker widths are required for all sails built since 2021, and are optional for older sails.  NB that most Vintage and Classic boats have mains whose girths (widths) are smaller than the ‘no girth declaration’ default, so declaring mainsail girths will slow rating slightly (typically by 1-2 sec/mi).