Original Message

Should have that all worked up prior to any maneuver.  For a person to give performance planning a "Thumbs Down,"  he or she should look at the requirements of 91.103.  

Not understanding the expected aircraft performance prior to the flight and/or a maneuver, would be like a 121 air carrier pushing the thrust levers to takeoff position and then determining if there is enough runway to reach V1, Vr, and V2.

v/r