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?
In my case, I decide when it's time to sell when a certain coin has reached my set profit goal. Usually, I set my margin between 30-50%, so when a certain coin reaches that profit margin, I will begin to consider if its time to sell; however, I don't just jump the gun and immediately sell it when I see that that margin has been reached. I also check how the coin has moved in the passed days or weeks because there is still that possibility of it continuously increasing in value, it may give a return already, but as always, the more the merrier.