Yes, the hack is well known and might be acceptable to an instructor, though I doubt it. The old tinfoil trick certainly wouldn’t be acceptable because you have to be able to switch between GPS and ATTI in flight.There's a hack with Mavic 1/2 where you can use and old version of DJI assistant to reassign the tripod mode switch to ATTI. Otherwise the global method is just cover the GPS receiver section of the case with some tinfoil before takeoff and drone will remain in ATTI mode.This should work for any make.