Totally agree with your comments, I have an issue with how most instructors train incipient spin / spin entry. Usually it will be from a power off, wings level stall with rudder input at the point of stall. The most effective way is to simulate an uncoordinated turn. (after an appropriate briefing as to why you're doing this) the typical killer is the overshot turn onto final. Instructors stress minimum bank angles on the final turn, so blogs uses a little rudder to "help" the turn, holds off bank resulting in a skidding turn. As the result of an increase in drag the aircraft slows, gets nose heavy so blogs holds back pressure - these are the warning signs of an impending spin entry. Do this at a safe altitude, in an appropriately certified aeroplane and instructor and you will find the penny drops and the pilot will be aware of the consequences of a skidding turn. A similar exercise can be done in a climbing turn, in a Citabria, Decathlon, Cessna 150/2 aerobat, Tiger or Chippy you will lose at least 700'. The added advantage of the climbing turn is you need to close the throttle, centralise the ailerons before identifying the direction of rotation and applying appropriate rudder, followed by elevator input to start the recovery.