To make money in the current market is very difficult, altcoin prices are falling and they will continue to fall at the present time, I think if you have long-term plans you should buy altcoin and hold, according to many people Anticipated prices of atlcoin will increase sharply at the end of the year. So buy and hold the hold is the best decision.
Yep, the majority of my portfolio is in altcoins at this point (majority verge due to partnership announcement soon), and I will keep it this way. Market will recover eventually and when it does i'll have some nice gains.
Altcoin price is not stable in the market. It suddenly increase and decrease more than it increase. You can sell when you think the price can actually give profit then use it to buy more coin when it falls. You have to follow the flow on the market with wise decision when will be good timing to do trading in this kind of situation that falls eventually and increase surprisingly.