There is no need to cost share as the pilot do the 'checking' is acting as a passenger, NOT as another pilot.
I have to agree again with M_J, what training do FI's get as examiners? None, yet we are asked to perform this duty on a regular basis. (insert standard arguement about the one hour revalidation flight.) As you get more experienced then you understand what is and isn't acceptable, but at first you are left to blindly feel your way.
Personally my standards in respect to certain things are very harsh, far more than other FI's in the club, but in turn they have other areas that they believe are more important.
Who's correct? I will argue black and blue for my points and they will do the same.
Beagle I would love to instruct in your world where everything is black and white, but in most clubs this is not the case. Since we get no real direction from any source, we all seem to do things differently and interpret the 'rules' in different ways. (for example I disagree with your use of PICUS rather than P/UT, my interpretation is the opposite.)
How do you define aerobatic instruction? In fact how do you define instruction at all? Training for the issue of a licence. As there is no aerobatic 'licence' as such what are you teaching it for? I would hate to see anybody doing aeros when they are not in current practice, and since most newly minted 200Hr FI's have probably never done more than an hour of aeros', then they should in no way be attempting manouevers or routines especially with a student on board.
How can you then justify teaching full spins, when there is now no requirement to do so? Could this not be counted as aerobatic? Wingovers, Lazy 8's, Loops or Rolls. The arguement could be that you are demonstrating the capabilities of the a/c to help breed some confidence in the machine.
I am an aero's instructor and find this very useful on occasion through the PPL course not just when going through the AOPA certificate course.