>As a side comment, I think that a "Double Moment" would do an even better job of embracing all the factors for which I selected the Double Rainbow. Are you listening out there H.S?

Yep, I have ears everywhere ;-)

Just FYI, a revised DR will be out next month that specifically addresses all the aforementioned points.

As for a Double Moment, I have designed it on screen but there are some design hurdles, notably the need for longer end struts. To fit two bodies, the end struts will need to be twice as long and thus no longer a simple fold up. I will probably will have to move from carbon fiber to foldable aluminum for the ends. No timeline for production and haven't even built one yet.

-H