I would carry a little jib, just to counteract the mainsail and keep the bow down when a gust hits. Think of an apple on a stick... upside down.... if you tilt the stick over(boat heels), then put a little forward pressure on it (such as being hit by a gust) the stick moves forward at the top, but the apple, because the stick is firmly attached, will rotate... the stick acting like a lever. This is a round up... which can lead to a broach if the rudder breaks loose.. However, if you have some jib opposite the main... the boat will heel but the forward motion on the mast generated by the main only will be counter acted by the jib pressure... thus lessening chance for a severe round up.... Hard to explain without a visual .... but try it.... the stick in an apple scenario... it'll make sense then.