The answer is here, Para 2, Section 4:
Section 4. SAILS. You must choose either no spinnaker, symmetric, asymmetric, or both types of spinnakers. Provide the overlap of your largest jib or genoa. Report any mainsails with girth dimensions exceeding (i.e. oversize roach) the default values in our Standard Sail and Equipment Specifications on a separate page. If using symmetric spinnakers (or both types) you must record the girth "G" and luff "L" of your largest spinnaker. If using asymmetric spinnakers (or both types) you must record the requested information (ALU, AF, AMG, AF) for the largest asymmetric spinnaker. You must also list any “Code 0” sails (midgirth between 50% and 75%) you are using and list the dimensions as if it were an asymmetric spinnaker. Make sure you indicate how the spinnaker(s) are tacked to the boat (pole, bow sprit or lanyard) as indicated on the form. If requesting roller furling credit, complete all the RF information required on the application form. If the information is incomplete you may not receive a RF credit to your boats rating. See diagram below for example of rig measurements and RF information required.