I was trying to do a daytrading for a couple of months. I can say, that it is possible to stay in profit but not as big as many think.
My average results are 3-6% a month.
I was starting every day from analyzes of growing coins. Then was waiting for trading signals on this coins.
I was aiming to take 1-10% of the profit from each trade.

Recently I found this thread, they offering to become a beta tester for automatic trading systems. Will try it as well, because daytrading routing takes too much time. Maybe I will be able to automate part of my trading routine.
Thread: https://bitcointalk.org/index.php?topic=3294989.0