I was on the west coast a couple of weeks ago sailing Puget Sound and doing the Swiftsure.
I was sailing Puget Sound on a 38' Catalina. The guy who owns it is a member of Sidney North Saanich Yacht Club in Tseume Harbour (sp). About half a dozen of his neigbours in the yacht club have changed from sock to "code zero" furler and swear by them. They all have furlers by "Rollgen":
http://www.rollgen.com/index_e.htm
Very easy to single hand; uses your existing asymetric; dealer in Vancouver who comes to you to fit the furler.
I saw a couple mounted while I was there and they look like good quality kit!
sam :-)