[quote=Dogboy]If it's all one continuous line (which it appears to be), I don't see how it elminates the need for a traveler or a vang. There's no way to "travel out" since it all just pulls to center. If the port and starboard blocks were independent systems, then that would be another story and you could use the windward system as the traveler and the leeward system as the mainsheet/vang.
Only advantages I see to this system are 1) it can pull the boom direcly onto the boat's centerline (with a traditional center sheeting system, the boom will always drop to leeward some degree. 2) it can be installed at the back of the boat so there's more room in the cockpit as compared to mid-boom sheeting and still allows clearance for the tiller.
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