excellent topic…
The optimum strategy changes from system to system. In order to find the optimum strategy you need to see if it will make money in the long term.
Moving the SL to BE and closing half position is not always a good strategy and here is why: if you get stopped out and then the market moves again in your favour you are cutting your profits. Today will feel great, but in the long term it could make you lose money. It depends of your system.
If you have a 50% win/loss system, then the risk/reward that wont make you win or lose money is 1. So if you start your account with 10,000 dollars and this 50% win/loss ratio doesnt move for 5 years, and your SL and TP is the same, then at the end of those 5 years you will have 10,000 dollars. SO you need to go for some more risk/reward ratio, maybe go for 1:1.5 or 1:2, it depends of the edge of the system because you can go for a 1:2 but the market doesnt give you that. SO to find the optimum risk/reward you need to back-test your system, and forward test it to see if it keeps working now.
So far we have this: a win/loss ratio and a risk/reward that will make you profitable in the long term. Closing half of the position will cut your winnings and will reduce your risk/reward, so you are reducing your profits in the long term. It takes maybe only one losing trade to erase those little winnings. It depends of the system. Maybe you have a high win/loss system so the little winners are more than the losses.
The thing is that you have different stratgies, for example:
When you have 2 targets; you have this strategies:
- Close half of position at TP1 and move the SL to BE. CLose the next half at TP2
- CLose half positon and dont move the SL so you give the price more room. Close the next half at TP2
When you have 1 target, you have this strategies:
- Move the SL at BE when risk reward is 1:1 and close half position, and manually trail the other half until TP1
- Never move the SL and manually trail the price until you reach the TP.
Or you can have no targets, and manually trail the price until you can squeeze the more profit. you can.
So the question is, which one is the optimum? It depends of your system, is it a mechannical system? or are you a discrectionary trader? are you a scalper? or a swing trader?, which time frame you trade, you trade at london, asian or NY session (volatility and pairs behave different)?.
SO my advice is this: create your system and then analyse the strategy that best works with it, back test it, and then see if it still works. The question to answer is this: which strategy will make you money in the long term?
Hope that helps! 