it is very difficult nowadays to benefit from short-term trading,. even a 15% / day profit becomes impossible for the current price situation..
there may be some trading strategies that you can suggest here. bittrex is the place for me to trade
1. what coins you use for short-term trading
2. what time do you usually trade
3. how much profit you can with your strategy (profit / day)
15%? its too hard but this is very achievable for a skilled trader but the questions above regarding on which coin then it would depend on a particular trader,since we do have our own criteria on choosing up a coin to trade, some may go for top ones and some would go for high volume depending on high preference but when it comes to choosing i will select the volatile ones since this is one of the best recipe on short trading.Time would really vary since the market never sleeps you can trade anytime. Profits? depending on how you trade and theres to fixed income on this one.