[Sketchup (14) offers customizing the toolbar also for third party features.]
Unfortunately the arrangements don’t last. After restarting the application only the customization of Sketchup features reappear.
I’m working with an iMac under OS 10.8.5.
Installation of Plugins by automatic install via SketchUcation.
There is no floating Toolbar ether (in my special case: for Extrusion Tools).
Thanks for your hints…