Yes. I have a bot in poloniex, detects when a coin goes down more than 10% in 5 min. But the thing here is, where to put the buy order? Right in the 10%? What if it goes lower? At the moment, I am buying just at 10%, or where the variation is. Then, after it successfully buys the coin, it puts a sell order at 5% margin (just to be safe, and not to put it in a 10% gain, better to have profit, that not at all!

So, what ideas do you have? What could be a general rule for the buy and sell order?