You could easily modify the the default behavior of the unpinned Panes of RadDocking
by implementing IFlyoutBehavior
for the control. Using it you could tell when the Pane should be visualized when they are unpinned and the mouse hovers over it.
As for your second concern regarding the focus. When unpinned Pane gets clicked it is actually activated and in order to be hide it needs to lose its focus - as you have already observed. That behavior could also be modified with the IFlyoutBehavior
We have created a sample project that demonstrated how exactly the behavior works and you could continue to modify it order to achieve the desired by you functionality.
We hope this will help you.
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