Quote from atticus:
The choice to scalp for fixed-targets is typically driven by the lack of a closed-system -- good entries and no dynamic exits. Hence the 2 handle target.
You'll believe you're banking a positive expectancy, but there is no guarantee your stops won't be obliterated. This forces you to extend duration, ride losers and cut winners.
I agree 100% but I think you're being kind when you site the lack of a closed system as the cause. I believe it's due more to a lack of experience and the skill that comes with experience.
If you risk what you're trying to make you need to run >55% just to breakeven (not including opportunity costs). If you claim to risk 10 on 2 contracts, take 1 out at b/e or thereabouts, then go for 20-25 on the last one, well, the math is still against you, and in a big way, unless you're going to tell me that every one of your winners nets the 2nd objective.....
Taking one out at b/e or thereabouts and moving the stop to b/e is not managing a trade - I would argue that it's a failure to address your fear of being in the market, or in other words, a failure in managing yourself. And the only way you're ever going to develop the skills to manage a trade properly is to face down these fears.
Of all the challenges involved with learning how to trade, this was by far the hardest one for me to conquer. But the only way to get the math on your side (and win) is to stay involved in the big moves and let the market do the work for you. And this means getting comfortable sitting through retraces, learning where to put the stops, when to let the market take you out, etc.
Having said all that, there's nothing wrong with adopting a partial strategy while you're learning. In fact I'd highly recommend it because there's no substitute for market time, and the easiest way to get it is to bring a trade to b/e ASAP, then do your best managing the last part. Once the risk is gone you should be able to relax and think clearly, and this makes for a very fertile learning environment. However, once you hone your trade management skills you're going to realize that an all in/all out approach is the best way 90% of the time.
All of this is independent of timeframe too. All timeframe does is determine frequency of trades.