enroute air charts as planning tool?

["Paul Jacobson" thebrunswicktwitcher]

Hi All,

I was just wondering if anyone had used en-route charts (see: http://en.wik=
ipedia.org/wiki/En-route_chart ) as a location planning tool?  A combinatio=
n of high and low charts seem like they might be useful in identifying area=
s with lower likelihood of air traffic, as I'm often disappointed after swi=
tching on the recorder only to discover an otherwise reasonable location is=
 right beneath a busy early morning commuter flight path.

cheers
Paul