Usually when trading altcoin there is nothing special about it rather you could target for short time projection couple with scalping, let say you can buy some altcoin and target when the market gains like 3 to 10 percent then you can sell immediately without holding for long. The next could be within bull run, you should pick out some good coin that are good or that easily increase in price so quickly without delay, when you monitor those coin correctly then you could sell when they gained little percentage.