Does the rule mean you are unable to take a GPS watch or just that you are unable to use it to navigate?
I like the principle that they are not reliable so should not be relied on but then either is a map a compass if the map blows away or the compass get broken?
I would think only an out and out ban on carrying them would satisfy some people concerned about foul play, but really only cheating yourself if you use it for an advantage.
Not sure where I land on this as I like retaining some of the tradition of it but I am a bit of a wava stranker and like having the details of the race recorded.
https://www.scottishhillrunners.uk/NewsItems.aspx?NewsItemID=62943