Rated 5 out of 5 stars

This Extension, along with Custom Buttons², makes an excellent tool for proposed-Boom mockups. Using View -> Toolbars -> Customize, I can relocate the Search Bar to a new Toolbar under the Navigation Bar, add custom buttons appropriate to the proposal, and add enough Spaces to the left end of each Toolbar (excepting Canvas Toolbar, which I usually hide except when switching backgrounds, and Tab Bar) to clear the left-side logo (as Brand Thunder hard-codes into commercial Booms for its clients).

This review is for a previous version of the add-on (1.0b4).