In my case, not much. Most income came from being flown in variously sized, approximately rectangular, flights about the airfield datum.
For the fun of it: in just over 1 year 16/11/99-26/11/00 651 hours (~600 instructing) I did 16 BFR issues, plus 15 'revision flights'. Over half the BFRs were 1 flight, and of the rest only a couple had more than 1 revision flight. There were a couple of revision flights where I did not do the final issue.
Issues took 1.2-1.6 and revision flights 1.0-1.4 (engine start to stop).
16/11/99-27/3/00 7 revision flights, 13 issues.
27/3/00- 22/5/00 0 and 0
22/5/00-26/11/00 8 and 3
Last edited by scroogee; 26th Feb 2014 at 20:04.