Flag hoisting rope is also known by Halyard or Halliard. This rope is used to hoist flag, sail or ladder. Halyard rope widely comes in demand for sailing & boating. The polyester double braided rope is basic material for halyards. The double braided rope is durable and soft in hand. It can stretch under high load. Other factors while choosing halyards are their diameter and colour. demand for sailing & boating. The polyester double braided rope is basic material for halyards. The double braided rope is durable and soft in hand. It can stretch under high load. Other factors while choosing halyards are their diameter and colour.