Think you have to remember that undocked windows does not mean you need two monitors, just means you have greater control over sizing and positioning on screen, either on one, two or even three monitors. Anyone that uses Adobe products will be aware of this.
Current design restricts the layout, size and position of each section. For example if you want the map larger on screen you have to sacrifice something else.
If you could undock windows you then have full control over all aspects, even if only on one monitor.
Again example, if only one monitor and you only need the map and Mylog windows it means all the space on the monitor can be used for just those two items, the main program window can then be minimised.
Having more than one monitor is just a bigger bonus...
Do not want to turn this health discussion into a problem, but think this one feature would take radarbox to the next level in user interface far more than some of the new features in next release. That's not knocking what's coming in next release just highlighting what "I" think would be a major step forward.
As for Airnav, keep it coming as a Ex-SBS1 user its refreshing to see posts from Airnav staff daily unlike what happened some where else!!