I think that altcoins will drop in few next weeks. You shouldn't buy altcoins now. Wait for the bottom, you will get more profit.
It turns out that your statement is wrong, and now all altcoins have some price increases, so the altcoins should be stored for long periods of time, not short-term trading.
They were bottoming for two weeks though. I wouldn't bother flipping around without being very well prepared for tax reports though. Profits are pointless if you will lose all of them to taxes or penalties once you start trying to cash them out.