Multiple Screens - Docking Toolbars

Does anyone have tips on docking toolbars (as well as Properties, Layers palettes etc) on multi-screen set ups? I’ve now got 20"-30"-20" monitors in a PLP arrangement and I’m struggling a bit with getting a good screen layout. It would be good to be able to close a viewport and instead fill the space with them. That way I could finally have enough width in the Layers palette to see full layer names, layer properties etc (what a dream that would be!)

It also occurs to me that having the palettes between viewports on larger screen set ups would also cut down on the mouse miles.