In the case of PFLs I find it good practice to turn off course 10° right/left when 'warming the engine' to allow for the extra lift generated. By the time you are back on track I like to think the effect is cancelled out. However, having been fortunate enough to not experience all going quiet Im not sure that this is of any
real benefit... but I do like a challenge!
When doing a pfl, and before the instructor can stop him, he deftly turns off the fuel, switches the switches, then pulls out the keys and throws them to the floor.
Was the instructor sleeping at the time?
p.s. I knew 'of' an instructor who would position the aircraft on a high final, give control to the student, pull the mixture then turn the ignition off and throw the keys over his shoulder into the back. Now THAT is daft!!
I too know a similar chap!
4B