[jonwhite]

Matthew, have you tried the hot keys for the drawing tools?

For example, the default hot key for zoom is 'z', so you hold down z and draw a marquee on the screen with the mouse, it will highlight the area of your diagram that will be zoomed. Release the mouse and the document zooms to the view you drew.

I mix and match: I use the keyboard shortcut, two fingers on the trackpad + ⌘, or the marquee method depending on whatever is convenient at the time.