Those show some good angles and you're right that a long lens would typically be needed because these maneuvers are not typically performed right in front of the photographer.
Again the real question for this thread is what can the PILOT do to increase the opportunities for good photos? As a photographer myself, I'm always conflicted when I have to do a maiden flight. Part of me would rather be holding a camera than a transmitter, in the sense that there are lots of people at the field who can fly but relatively few who can photograph well. But then, I really prefer to maiden my own models. Too bad, transmitters don't include a "snapshot button" as well!