"Dan Nafe" wrote in message
...
In article ,
"Vaughn Simon" wrote:

... (add a GPS-informed computer to the mix and you
could
always be sure that you had enough energy to return to the field)

[smacks myself on the forehead]

What a great idea!

Yes it is a great idea, but not mine. Such computers have been used on
gliders for years.

Vaughn