Very often for me a better target will appear after a trade is put on. Hence target flexability but based on a firm method for determining a trades extent is what works for my trading. Best John
Will the Street know that I'm reaching a certain level of profit and then I have to cash in before they take it back? - No. Not only the Street didn't know but also they don't give a damn! Base on today's sentiment, could I know the Street is happy or unhappy? - Yes, somehow a little bit. Conclusion, no fixed target but constantly evaluate the situation.
No. You need a map (plan) of the situation. You need to have every corner mapped out. You need to know how to react to enemy attack. You need to have drilled out thousands of times the way you will act at any possible change of the situation. With all this you drop in the combat zone and start kicking butt. No predefined target but shoot at the real targets coming at you. If you are not prepared you will get lost in the action an get killed.