Oh if we all could only know when a bottom hits or a top is reached.
Everyone has their own comfort zone. I have missed a lot of big runs simply because the profit available was too big for me to risk missing. Can't kick yourself over those, those are someone else's runs after you sell.
I would rather do that than price a penny too high and miss selling entirely I did that with FNMA a couple of times, although I think it will work out better in the long run.
Study, study, study. (and don't spend too much time on message boards! :)