Booms are dangerous and can now be done away with. The mainsail is trimmed by three sheers to three permanent backstays, (see Fig.1.). A mainsail that is luff roller furling on a rotating jackstay that is aft and parallel to the mast can be furled or reefed in seconds, (see Fig.2). The best rig for this system is a cutter rig with three roller furling stays. The other two roller stays are in tandem far forward and go to the top of a very tall mast that is stepped well aft. The outer headstay has huge roller furling jobs for downwind work. The inner headstay has heavier medium sized sails for upwind work and storm conditions. This rig can be handled by far fewer people and can easily set far more sail than cruising boats ever could before

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