Recirculate cockpit air to keep feet warm?
I have done only a few flights above 13K' MSL in the east, never higher than that.
In other parts, 13K' MSL is a decent Soaring day.
So, I am NOT an expert!
Yes, metal rudder pedals can suck heat real fast.
Sunlight can help a lot.
Being damp (rigging, damp day, whatever.....) REALLY sucks heat.
I can only go by many years/miles hiking and likely lower flight altitudes for flying.
I will TOTALLY defer to others that think my "great altitude" is sorta the bottom of their "safe altitude".
Gotta think of where you are vs. where info is coming from.
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