The certification test flight requirements are among other things, that regardless of the configuration of the aircraft, there should be no more than 15 degrees of wing drop at point of stall. That means full flap and power on and clean power off. Naturally, any mis-rigging, damage, or inadvertant yaw will cause a wing drop.
A recent draft CASA document NPRM reveals that the minimum altitude for recovery from aerobatics has been reduced from the current 3000ft agl to 1500ft agl. This was confirmed today when I talked to a senior CASA FOI.
In view of this change, it will be interesting to see if flying schools around Australia adopt the new proposed rule of 1500 ft agl recovery. CFI. Would you then still have your students climb to above 3000 agl for stall recovery practice?