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$. Buying low and selling in a reasonable profit, again when it comes to my price I use to buy and sell for a reasonable margin this will work only if there's continuously fluctuation, just have a try and make daily profit.
I never try that, but since you did a day trade for ETH 15$ and 20$ is not that bad at all for the earnings in one day.
But how many hours that you are in the front of your monitor or desktop? Aside from that, you were also right if the fluctuation
continuously moving due to there is a probable cause that we can able to earn several times for sure.