first, thank you goomboo for this thread, I learned a lot from your suggestions.

I am in doubt about how to know in good time when the EMAs cross. You said you use the hourly or daily bitcoinchart, but his update is not high enough to let you to profit from small oscillations. I mean, suppose the fast EMA cross above the slow EMA when price is 74, and comes below the fast EMA when the price is 76: we can get profit only buying before 76 is reached, and this often happens too quickly when there is a bounce.
So how to get this info quickly? Using the market API? Automatic trading softwares?