I have a 1/4" down haul line from the head board straight down, through a turning block at the base of the mast, to a deck organizer and back to a cabintop rope clutch in the cockpit. Allan's idea to pass it through a few rings attached to the front of the sail is interesting because I find it does sometimes get caught forward of the mast on the wrong side of the steaming light when I raise the main. I would not weave it serpentine between the slide glides. Seems to me it's likely to get fouled up that way. Keep it simple so it just pulls straight down.