O.K. I now understand you guys are talking about small aircraft with relatively low HP engines that are used in the flight training schools.
Sorry for getting everyone all upset here I have been away from that sector of aviation for a lot of years and just did not clue on to what all this was about.
But the penny dropped finally and I apoligize for confusing some of you by trying to explain how we do it in bigger airplanes.
I wish to make just one more comment for some here to ponder over.
If the select RPM and Power as needed, when needed, works in large aircraft the same must hold true for small aircraft that are far, far less complex to operate. If I had operated big radials in the same manner as seems to be so popular in the basic training twins I would have ruined so many engines I would be unemployable.
One of the most unwanted forces in a large radial piston engine is reverse thrust on the internal moving parts....real exotic things start to happen when you fail to smoothly control the RPM power combinations.....
Anyhow enough of my ideas , whatever works for you should be just fine in general aviation basic aircraft.