One of SL i'm using is like this:

SHORT :
NormalizeDouble( High[Highest(Symbol(),0,MODE_HIGH,10,1)] - 3*iATR(Symbol(),0,10,1)),4);

LONG:
NormalizeDouble( Low[Lowest(Symbol(),0,MODE_LOW,10,1)] + (3*iATR(Symbol(),0,10,1)),4);


For now it looks good but mabye someone have a better - difrend idea to make SL?
Please SHARE YOUR SL