Stick with altcoins with high or huge volume yet you would able to see those liquidity which in terms of volatility then you could somewhat assure of it but its up to someones choice whether
they get engage with it or they would like on dealing with those low cap or simply plays with fire.
Trade on coins which you do see that has volume on where you could really play with moving prices but of course dealing on it actively isnt simply as it sounds.
Invest on what you can afford to lose and dealt up according on risk management that you had set out.
The logic behind trading on low cap coins is that if someone puts up a lot of money into them, they could go up like crazy and that is something very important. I believe that we are in a market where someone could throw in a million dollars into anything at any given moment and that is why I believe that they mean something with it. Doesn't mean that it would happen, there is a good chance it may not happen as well but I believe that the chances of it is there and that makes people want to check it out.
I believe that high volume and high liquidity ones matter the most of course, but that is just less risky and less reward solution to a high risk high reward alternative.