So, my wife won an 8gb current gen Ipod Touch (the one that shots 720p HD video) and I've seen things like this: http://bad-elf.com/products/gps/ that can be attached to it for GPS purposes. The cost is a bit prohibitive simply because a high-sensitivity GPS garmin product (e.g. an etrex Vista H) is not significantly more expensive, but the ability to shoot HD video, take OK pictures, and have GPS available makes it seem somewhat more alluring. It would also eliminate the need to carry one of our clunky older Android phones (which shoot junk video and take poor pictures) for the purposes of track creation and the use of checkpoints. I just don't know how well these add-on devices work.
