With the little knowledge I have, I have seen a lot of people scalping and making it than those that does a full trading(hours, days) but they tend to lose so easily can we say it greediness or it's not advisable generally
I have also tried this scalping before, but you will really need to monitor it from time to time, especially if your timeframe is 5–15 minutes. Often, even when there is an opportunity, the movement of the candlesticks on the chart is too gentle. The risk is really quite high.
But even so, you can really eat from scalping as long as the altcoins you are going to make a trade with are right, but at the moment it is done in 15–30 minutes if the time frame is daily, and at least so far, the market is a little bit unstable, although there is a chance that it will suddenly pump up and then also dump temporarily to liquidate.