Continuing the discussion from Show us the way you have SketchUp set up on your computer right now:
Eneroth Viewport Resizer — Extension Warehouse
Provides precise dialog control of the SketchUp viewport or the SketchUp window.
its just done by adding more rows of icons on the top and left of the screen. - its a bit tricky. The window taskbar also contributes to the aspect ratio, and even the scene tabs