Ahah-ha, I'll have to get over it. Sure enough, the strategy is profitable in my case. To my regret, I can't really explain how I make the final decision about closing the trade. I think someone would call my trading style "intuitive", but it feels like a flash of light in my head: time to close! Can't say the flashlight is correct 100% of the time, but it does help.
What I mean.. Olymp is doing a great job educating its' customers. They even revealed my "holy grail" of options trading. But if you lack experience you won't be able to profit with none of the strategies, neither Binary Gambit, nor any other system or indicator.