Quote from mschey:
We all have to learn to question our beleifs about trading. One common misconception, is that you never add to a loser. This is a fallacy. Adding to a loser and trading out, can and does work very well. A good general rule of thumb is that when you can't take the pain, and you have finally reached your puking point on a trade, double your position and PLACE A STOP ON THE ENTIRE POSITION TO PROTECT YOURSELF.
Good traders to this all the time. Not recommended for those with a weak constitution, fragile health, weak heart, or small trading account.
I do hope you are talking about intraday trading and not position trading.
I would strongly suggest one look at the correaltion of the returns generated across the portfolio before doubling up at maximum pain thresholds.
Or do you unequivically state doubling up is a prudent approach to trading,including overnight positions??