If furling required you should be aware that you have to handle a lot of rope on the tramp while sailing (this length does not skip into the beam)The jib-traveller line should have a low breakload (Polyester only)like 120-150pounds. This is strong enough to handle the forces while sailing but weak enough to break in case you hide the jib during a capsize. Serious damage will occur to your jib Equipment in case this line does not break. cheers from germany