I have just developed a new strategy. Instead of HOLDING that might take forever. I just sell my altcoins to BTC.
Just like now, BTC is about to go up again to hit $5000 usd. So I sell all my altcoins and wait for Bitcoin to go up. Soon Altcoins will start to dump itself.

And that is the time I will rebuy all again my coins from the dip. This would give me more income. Just remember: If Bitcoin is going up fast, expect an altcoin crash.