Dear Epiphany,
Don Jordan spent so many years working on the drogue, he was chief aeronautical engineer at boeing, and retired when the Jumbo jet came into service, I made the decision to make the drogue to his exact specifications. I use american made fabric and sail thead. The loads on individual cones is relativly small. for very large yachts I use 2oz rip stop. There are no hoops inside the leading edge, yes they stay open.
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