Sailing downwind means less apparent wind, which means that the boat can carry quite a bit more sail area to maintain reasonable boat speed. A bigger jib is one choice, but for most boats a better answer is a larger sail yet, i.e. a spinnaker of some sort. One popular choice is an asymmetric cruising spinnaker, generally tacked to the boat's centerline, either to the headstay or sometimes to a bow pole. Being tacked to the centerline, they won't generally wrap, but it is still annoying and ineffective. When running or sailing a very broad reach, an asymmetric spinnaker really wants to be flipped around and poled out into the fresh breeze opposite the main.
Few people like to do that, because it means handling a pole.
Symmetric spinnakers were born out of racing, but they have a lot to offer as downwind cruising sails. The biggest advantage is that since they are tacked to a spinnaker pole, the tack is moveable, and can be adjusted forward or back, up or down to suit different conditions. This makes symmetric spinnakers very effective even at deep sailing angles, which are all too common. We have a cruising spinnaker aboard, so this is not just idle thinking, and have sailed with it tacked to the headstay, to the bow fitting, onto a spinnaker pole set low, and poled out to windward. And we always look at it, scratch our heads, and can't figure out why it is supposed to be easier.