J/30 Class Association Forums J/30 Forum The Boat, Sails and Equipment Roller Furling For Racing

I also have a Harken unit, but I think it is a Mk II, possibly a unit 0 - can't really recall. I do not bother removing the drum and swivel for racing. It just does not seem necessary, as the jib is not really distorted by the drum at all. We just slide the upper swivel below the feeder and that's it.