I just tried day trading in eth and the price fluctuations which happens continuously is something where we can make profit in daily basis, guys from today morning to evening I could have earned nearly 15 to 20$. Buying low and selling in a reasonable profit, again when it comes to my price I use to buy and sell for a reasonable margin this will work only if there's continuously fluctuation, just have a try and make daily profit.
Thats the best way to doing right now buying and selling and we can make that also into different altcoins not only ETH even in a bitcoin we can do daily trading if we courage to doing that thing. And yes it was fun to watch if we buy and sell to high because we earn enough even if a small amount it is a big help for us.