Nobody wants to be monitoring the prices all day with the cursor on the sell button just waiting to click the mouse, so how do you decide when to sell?
If you set up an open order with a low target price, you'll be disappointed when the price climbs well above your target price.
If you set up an open order with too high a price, you might not sell at all.
What's your strategy?
If what you want is to maximize the amount of profits you get with each trade there is no other way than to day trade and for that you need to watch the charts most of the day, I know it is not the answer you are looking for but that is the only way to make sure you get all the profits you possibly can especially with something as volatile as bitcoin.