Hi Doug: in your website, on your drawing below, the sails pulling are settled below the depowered sails. Wouldn’t it be better to reverse? Perhaps some risks of tangle would be mitigated (above all if I use kites with powered tail), perhaps pulling sails would benefit from better fresh wind, perhaps also the top cylinder could rotate in a suitable direction to provide additional lift from Magnus effect as for something like a Sharp rotor or even a simple inflatable (or rigid but light) Magnus cylinder, by using the two end disks also for the passage of the two ropes.
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