Quote from lescor:
I have a chart with a bunch of lines. When the price hits a line, I buy or sell, when it hits another line, I add. When it comes back and starts hitting more lines, I cover. If it hits the wrong lines I say "oh crap" and take a loss. The lines are just numbers I pull out of my ass that historically seem like decent enough levels to place a bet.
Seriously, it isn't any more complicated than that. Sometimes people way overthink things.
Quote from lescor:
My size on rtm trades is pretty small, usually a few thousand shares max. I'm not too concerned with distorting the market.
Adding and hoping is not what I would call a sound strategy. I add to positions as the odds of them being profitable increases, it's part of the system.
I rarely add to winning trades.