I tried almost everything listed on that page. Far and away, the most effective thing was to just buy a keyboard that puts CTRL and ALT under my thumb instead. The Kinesis Advantage is the most popular and I love mine:

http://www.amazon.com/gp/product/B000LVJ9W8/linkCode=as2&tag...

(affiliate link)

I was in a training class yesterday and had to use my laptop keyboard for the whole day. Halfway through, my left hand was cramping arthritically and it renewed my faith that this was an important purchase.