I have the beads or parral on mine, but this is used only to set up the spinnaker as I understand it. The tack Downhaul sheet runs through a block which is attached to the bowsprit via a pulpit clamp and quick link. The sheet runs back to the cockpit. Once the spinnaker shute is lifted and it is full of wind, then the parral is released to let the spinnaker fly. The aim is to keep the spinnaker horizontal and let it fly like a kite in front of the boat, pulling the boat. Mine spinnaker is a Asymetrical and is positioned either port or starboard pending the wind.