I have a Harken system. I don't know if it is split drum or not, but I've found that a snap shackle can be placed on the forestay fitting, which, when attached to the tack of the jib, places the luff of the sail aft far enough that the luff is clear of the drum. I don't even have to remove the swivel, since the luff is short the length of the headstay by more than the length of the swivel. So I don't have to remove any hardware to fly my #1 jib. But obviously, with the tack attached to the deck instead of the drum, I can't furl the sail.
My #2 and #3 dacron jibs are both cut for roller furling. I just use my #1 mylar for racing.
