So your upside potential isn't limited? I.E. you haven't said, "At this point I'll take my profit"? Do you not take the same risk with all trades? E.G. 2% of capital?
I think if I were doing this I would need to adhere to a strict set of rules, i.e. this much capital and no more; otherwise I would end up chasing my losses by doubling up, and end up out of money very quickly. Surely the temptation is there, when you're confident in a trade, to stake more than you know, in your rational thoughts, you should?
Okay and what if, hypothetically, your stop loss comes during the middle of a massive sell-off? You could, in theory, lose more than 2% of your account, correct?