J/30 Class Association Forums J/30 Forum The Boat, Sails and Equipment Main sheet

If it blows in Hawaii like I think it does, you probably want at least the 4:1/8:1 and it's only a bit more expensive:
http://www.marinerparts.com/4-1-8-1-gross-trim-fine-tune-system.html

Also a fan of the 'standup toggle' if you have a Harken traveler.
http://www.marinerparts.com/midrange-stand-up-toggle-w-control-tangs.html