Totally agree with the fact that you always make the most IF you find a huge winner and ride it to the big finale. It is regrettably true also that most investors sell their winners too early and ride their losers down too far. Thats why taking a little off the table on a double or so and then keeping a mental trailing stop in play is prudent behavior. All of course is subject to the particular stock in question, as the variables are large betwwen companies.