Bill Daniels wrote:
I've wondered if pressure ports on the top and bottom of the fuselage nose
where the nose contours are at about 45 degrees to the airstream wouldn't
give about the same pressure diferential that could be used to compute AoA.

The factory AOA meter in my DG-600 uses cross-connected pairs of
fuselage static ports just above the wing root, one set just aft of the
leading edge, and another at roughly 50% chord. The meter appears to be
a slightly modified electronic vario.

Marc