That may be another interesting rig to consider: hard wing rotating 360 under 4? spectra shrouds from the top only - with soft sail on trailing edge - rumored to be patented (should be hard to defend with prior art like Chris White's MastFoil) Relatively few parts for the number of options but probably quite high tech to keep sturdy.
https://uploads.tapatalk-cdn.com/20170308/bab0e85c1b902a0ab986912e5a03deb2.jpg
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Posted by: lucjdekeyser@telenet.be
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