Practical AGL in everyday flying  

There is a level of knowledge and professional respect you have not yet attained. The term "colleague" shows that each in a profession demonstrates equal standing for one another.

Those performance curves are parabolic curves attained from quadratic functions.  All aircraft.  A wise pilot will reference and use them prior to every flight.

I generally don't go to conventions...Don't get much out of them...Except a headache from too many IPAs...