I do this with a trackball; I learned to wiggle the mouse with my left hand because it fits with my desk better, and, like the product above points out, it's a

I do this with a trackball; I learned to wiggle the mouse with my left hand because it fits with my desk better, and, like the product above points out, it's a little more ergonomic to avoid flying over the numpad. In my experience, trackballs have a tendency to better support ambidextrousness.