Using the Forerunner to "track write"
Interesting article in Runner's World where a lady used her GPS watch to create a message when overlaid on a map:
Let Her Spell It Out for You
I've thought about "track writing" with my Garmin Forerunner 305. The lady in this article used a 205. A 305 has a much better antenna, so I think the results would be much better.
Here's my example with the 2 devices:
Garmin 201 - Track workout, October 2006
Garmin 305 - Track workout, November 2008
The difference in the new antenna is remarkable.