Thanks Mike and FishinFinn,
Dutch and Grizz. You guys are right, the challenges never stop. There will still be lots of room for improvement. Meanwhile the incremental steps on the way are pretty enjoyable.
Drewboy, thanks, and good idea about making the Arizona Spring Hang an annual event. It was loads of fun!
Thanks, Headchange4u, but I think I still have plenty of changes in design yet before this project is finished. For instance; just how independent should each side of the hammock be? If each side is more independantly suspended, the occupants won't be able to hug easily. If less independent, there will be more disruption when one exits the hammock and one remains. These thoughts will factor in to the design of my central support rope. I'd really like to find a solution to this and it will mean a significant redesign of the head-end suspension.
Otherwise, if you want to get started on one right away, here is the basic premise. You take two bridge hammock patterns and splice them together. Where the feet intersect make it just a little bit less than 50% overlap, at the top make the intersection a little bit less than 10% overlap. So these two bridge patterns now form a double bridge pattern. So that's it in a nut shell.
"Better living through Hammockry"