Did I miss some context? Was there a debate about this? There are
videos on youtube of people doing barrel rolls with a cup of coffee in
their lap.

-robert

Ever watch the video of Our Resident Aero Commander Shrike Master Pilot pour
a glass of water/tea/lemonade with his right hand, while performing the
maneuver with his left hand on the yoke?

Bob Hoover is his name..

BT