I found that the stop loss technique is one type of hedge. Traders use this method in general when you can experience the biggest loss as the amount for unrealized market movements. so they use it at the point where the currency will automatically be sold at this point! Stop loss is a good tool but placing it at the right point is everything if you are good at market analysis and you don't want to put STP close then you don't need to put this, if you are not good at analysis then this tool is very important to prevent large losses basically depends on your knowledge