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On Bitfinex and GDAX I've found RSI has been great for identifying oversold bounces in conjunction with 5 min candle sticks. Works like a charm majority of the time. Though I'm not nearly as dextrous as I should be buying in and selling out. Fat thumbs :-P

but you cannot use RSI (Bitfinex) if you are trading in Polo. Bitfinex is using tradingview charting tool. It's my fav one.