Daytrading is safe if you are constantly checking the moves of a coin and detect a stable move between two spots. I mean, if you find out that a coin increases to a certain point and falls back to the place where it was frequently then you know where to buy and sell.
Etherium is one of the coins that I make daytrading. Other one is VeChain.
Ethereum is having a good price lately and seems not stopping to pump. Even bitcoin is dropping, ethereum continue to grow with a minimal slide. I think 5% for Ethereum is an average growth and its acceptable profit.
Vechain is another good technology to watch that I hope it will grow stronger in the coming months and years.