S-Lines Youth Slalom RopeS Lines Youth Slalom Rope The S Lines Youth Slalom Rope is a tournament quality slalom water ski rope sized for younger skiers, crafted in house from the same yarn S Lines uses across the top of the slalom range. At 5mm diameter, the rope is lighter in the hands than adult slalom mainlines better suited to novice skiers building course confidence than a full sized 80 strand rope. The rope shortens from longline to 35' off (12m), covering the line