Instructors teaching full rudder to "pick up" dropped wing.

[john_tullamarine]

full power is applied at the commencement of recovery

Caveat - be sure that this is applicable to/suitable for your aircraft.

The certification approach is to have a delay between the initiation of recovery and increasing power. Some of the problems which may arise, especially with higher power aircraft, include normal prop force (which might give you a nasty surprise with a nose pitch up) and (probably only a problem with big engines) a quasi-Vmc response due to the old P-factor problem.

Re the current certification approach to stall recovery, you might like to have a read of AC23-8C at p 92 where the good words read -

Recovery..... The power used to regain level flight may not be applied until flying control is regained. This is considered to mean not before a speed of 1.2 VS1 is attained in the recovery dive.

Straight from the CASA Flight Instructor Manual

All fine and beaut, I guess .. just one more example of the operational folks not reading what the certification folks might have done before giving the aircraft a tick in the box.