recall the notes stating the F6 speed limit as 650kts/M2.0 but can check it later. Would that make any pilot attempting higher than that a cowboy?
Recall another one stating M2.2 or M2.3 in the 80's in an F3 Lightning (Mike Hale I think).
Then again the same can be said of all those attempting alt records above the notes limit of well..much below FL870 or FL750 (some of the altitude I have heard from various sources ie 87-88,000ft or 75,000ft etc).