Dead downwind, twin headsails are much better. If you must use your main you might find that sailing slightly off dead downwind is both faster to your waypoint and much more comfortable. Or you might try just dousing the main and sailing with a big headsail only. Downwind the main is a pain. There is also a product called a BoomBrake that basically adds a friction system to keep the boom from slamming over.
Last edited by rtbates; 02-19-2007 at 03:23 PM.