On Tue, 11 Jan 2011 08:55:45 -0800 (PST), Gary Evans
wrote:

The purpose to me in knowing the real L/D is not for bragging rights
but to have the correct value in the flight computer.

The "correct value" at which speed?
I suspect that you don't want the correct value, but the correct polar
in your flight computer - which, obviously, cannot be measured in the
way described.


Andreas