One week ago today, returning from El Paso to Tucson at 12,000 feet I
had at times a greater than 100 kt headwind. I saw a low of a 27 kt
ground speed in my Mooney ! That leg of the flight averaged a 65 kt
ground speed (80 kt head wind).

Didja consider dropping down some to see if got any better?

You don't fly much in the west, do you grin ?

12,000 was the MEA on that route (westbound). I couldn't drop down any
without canceling IFR and going VFR, and I got about 0.5 of actual
during the flight so IFR was realistically required.

KR