I would verify with the store, but the length of line that wraps should be roughly the length of the jib's foot, plus maybe the circumference of the wrapped sail times 3 or 4 for the extra turns. If you have your jib, measure its foot. The diameter of the wrapped sail is probably something less than a foot, so that is maybe a 2.5 to 3 ft circumference, adding say 10 ft or so. If you think about it, regardless of any furler, each sheet would have to be long enough to have some length for handling and winch winding when it is to windward, which means it has to reach to the mast, and then back around the lee side to the stretched out jib clew. The length of line on the lazy sheet from the mast to the clew when the jib is sheeted in is about equal to the jib foot minus the distance from the mast to the forestay, assuming there was just enough line. Since the standard measurement must account for some slack, that is going to be very close to the line that has to wrap.
