It's always been possible to make 20% or more trading the right altcoins, but unless BTC, BCH, LTC are high, we can't cash out profits at a higher price. If we all bought more of these, the price would pump and we'd make more money. This is if you need one of them at your exchange to cash out at Coinbase.
LTC is quit cheap now. Lowest point is 78. Months ago it’s highest price was 170. If we all buy at the right time, we all have chance to gain a lot profit.