Depends. If you believe that the bubble has popped and you do not have the time or the experience to do day trading, then it's probably best to stay clear of trading at all. But I think that we're already near bottom so it'll could be profitable to stock up on some cheap coins during this time.

You can't expect profits from every dip.

Buy the dip, and if you're short term trading make sure you cash out as soon as possible. Altcoins are a volatile business. If you're long term holding, then you keep holding until the next major rally comes round. But buying in dips generally will give you better profits for sure in the long run.