wdn
i could go on, but i've gotta go get my CPL and all......
Good idea... come back when you have even a slight idea what you are talking about.
The way to impart knowledge and skill is NOT in the demonstration... it is the subsequent coaching of the student, while he or she is flying, that does that (as you will find out if you ever get as far as an instructor rating). Motor skills, judgement and so on can only be achieved by practice on the part of the student, not watching an instructor do it.
The rest of your post is, well, nonsense.
And if by "fully feathered approach" you actually mean an approach with one propellor feathered... that is about the safest assymetric manoeuver, if carried out correctly... and if you go around from a safe height.