It would be a best idea to have Plan B.Basically,you should concentrate on your strategy in which you are best.Some experts exist who are having some back ups and having plan B is a good idea.But i think,this market is so quick then how would you find the perfect time to place your plan B or you have to be prepared initially about your plan B.Like you can trade with two different currency pairs or you can trade with two different strategies at the same time but the only problem is of time management. Yes, like many other Forex traders, I also make more than one plans in the case of my trading on Forex and I think that is is necessary too, to have more than one plans regarding your trade.
It is important because if one of your plan fails and you think and see that it is now difficult to stick with your original plan, you should have some other plan also to which you can switch in order to prevent your trading from any loss. You must have a plan B and if you don't have you are at a very high risk. Risk is very high in forex as compared to other business and you should fully prepare to avoid it and always plan before you start work. Plan B is very important to have because sometimes markets go against you and you don't get the think to think or make plan be prepared it so that when something happens you just apply your plan and stop your huge loss. :)