Indeed, market conditions are very difficult to predict, as well as this year. But since then I still hold a small portion of my funds on altcoin and will still wait until it reaches the moon.
To date, there is no other strategy than to keep all of its assets, but to restore the cryptocurrency market. In any case, for each project only long-term storage of coins can make a real profit.
Those guys, who did not sell their altcoins and BTC before the great fall, do not think so. Holding is not always the best decision. You need to feel the market movements and even "calculate" them (in ideal).