So many people have told me I should use a trackball for my tendonitis, and are absolutely convinced it will solve my problem, but I have to say "thanks, but been there done that already." And I use my mouse a lot like you do: minimal movement for maximum effect.
Ann, funny you mentioned trackballs. I know a guy that swore by them. I tried them and they hurt my hand too. I do have a cut muscle across the webbing of my thumb. I blamed it on that. As I said to each their own. I guess the mouse...I can rest my hand on it and it doesn't bother my thumb...especially over extended periods of time. Which is important. I never move my mouse more than ..ummm say 1/2" to an inch, some people might need to learn how to adjust their settings. Just because you have a large mousepad doesn't mean you need to use the whole thing! I think that is what my friend liked about the trackball, you didn't have to move it. As I mentioned, you don't have to really move your mouse much either.
Cadman-LT, that's why i put "graduated" in quotes. I'm always amazed that some people's hands like trackballs, whereas they cause me a lot of pain. I'm even more amazed at how different our uses of input devices can be.
Cabe, I agree with it being tiring. As far as hacks/mods on a Wiimote....I don't own a Wii and probably never will. I'm a 360 guy. I can't see using a Wii remote all day(8hr day) that would be soooo tiring.
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Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.