The "airspeed to fly to produce the fastest time over a given path"
(for a given thermal strength) _does_ depend upon the wind. Simple
MacCready theory does not include wind effect but can be modified to
include it. Whether the 302 includes that effect I do not know. I do
know that wind effect is included in the STF calculations (including
that of airspeed) used for my BLIPMAP viewer "Track Average" popup.

Jack