Depends on what you mean by "turning point". If you are referring to picking tops and bottoms of significant runs, that's a tough game but there are some who do it well. Most of my trades are trend pullback entries and as such, I am anticipating price to turn back in the direction of the trend as defined by my time frames. For this or ANY methodology, position (money) management is critical.
If you could predict direction correctly, even something like 65% of the time, you could rule the world eventually because of all the money you would make.
This is something which also requires a definitive context. The great majority of my entries go in my desired direction after entry, however of these trades, some will result in a gain, some will come back and scratch me out and some will come back and result in a loss. Trade management is key.
Of course that wouldn't be possible. What you describe is exactly what I am talking about. Creating the position on the turn.
I think selecting turning points is probably possible on short term and long term for different reasons.
donchian channels VWAP ATR Trendlines S/R levels volume/market profile EMA crossovers at the above levels All help for picking turning points (statistical outliers). A pure efficient trader will will end up selling peaks and buying valleys..everyone else who trades in the middle is fighting with each other.. (consolidations)
How does this differ from scaling into a position? I am seriously asking, I don't know much about options.