Most of the altcoins that have good investors as well as a greater amount of trade on top exchanges would yield a guaranteed 3 times return at the time of pure bullish trend. The business is not bullish and not bearish right now. It's time to gain stability, which ensures that the market fluctuates within different margins and holds the marketcap stable without major changes. When the trend turns to bullish then we will definitely see easy money again.
Yeah, I think as long as you stay away from unknown coins that no one knows anything about, you can invest in just about anything and get 3x-5x whenever the bull run kicks in to full gear. Basically, just don't gamble on something unknown and stick to the top coins on coinmarketcap. You very well could end up seeing even better than 3-5x.