Thanks, for the link. They look pretty sturdy, but I already opted for a new gadget. After seeing Striblue's GPS this summer, it was a "must have". I picked one up on ebay for 200. I love it already, even if it has only navigated me to work and back. Whoppee! I highly recommed it. Awesome off the shelf features with no extra software.
As far as waterproof containers, I'm looking for an 0-ring that will fit those plastic boxes that I have tons of lying around my office and home. If I can find it, they will become even more useful in my kayak.
I'll give the GPS a real workout when I get to Eleuthera in a week!