Vic - this is an easy answer for roller furling. Class rules specifically allow roller furling.
5.8.1 Permitted Alternatives:
5.8.1.1 Jib roller furling system to facilitate sail handling.
I defer to the class measurer on hanks. I know there are boats that have raced with hanks at the NAs and previously measured in. I think hanks meet the intention of the rule below, since the fore and aft dimension is not exceeded (e.g. hanks are 0" groove)
5.8.1.2 Jib luff groove systems other than that which is provided standard shall not have a fore-and-aft dimension exceeding 31 mm.
Last edited by Rhapsody #348; 03/30/12 07:04 AM. Reason: Added hanks comment