We all know the story of Andy flying an early prototype dual spine kite and saying it had a "feeling" of something he was looking for - and that eventually this kite was developed and released as the Gemini. And that it was and still is a great kite. But why wasn't there any further development on the two-spine kite? I know there are a couple others out there, but also that they are pretty pants.
Considering that Benson's offering after the Gem is more conventional (but better at tricks), does this suggest that the Gemini could have been a single spined kite, and that it is just it was designed by two skilled people that it turned out to fly well? Has there been any serious attempt to make a single spined kite which is as close to gemini shaped as possible? Or a dual spined DS?
It interests me that a kite which made as much impact as the Gem has been abandoned as a design.