So far, I only follow the basic trading only, I always buy the low price and sell the high price. But the problem is I cannot always see the price increase in after I bought and I need to wait for a while or a few days before the price start to increase. And if the price can increase after I bought, then I don't have to wait for a while and I only do fast sell for that coins. But in this situations, I think the hold strategies will better to do because I cannot see that I can make a good profit now.