When I’m using Kindle for PC but resting my voice at the same time, clicking through page turns can be irritating even with such a light switch. Usually, I end up using dwell clicking – specifically, the “repeat with movement required” button combined with left click in Point N Click. That way, I can use the trackball as a page turner, which requires much less movement.
The “repeat click with movement required” button is the one with the blue and red arrow pointing right. It will repeat any click you choose (not drag functions) until you toggle it off. To repeat the click, simply move the cursor. With an optical trackball, this can be either a slight or broad movement in any direction, with the same result. With the cursor over the large “click margins” of the Kindle page, any movement will trigger a page turn. You can still move the cursor to any other point on the screen – the menu, for example, or the Point N Click button bar.
This would also work with a mouse, though you might not have as many nuances of movement. It would also work with a joystick or mechanical trackball, but be careful of drift; I remember when I borrowed a Roller II, the ball would roll back a notch or two in the opposite direction when I let go. That might make you skip a page.
This would also work with the Nook for PC application, but there’s a much smaller click margin.