If doing it full time, starting from let's say $10,000 to play with, and btc being in between the same volatility now and how it was about a year ago when it was at around 6k..what could you net a month, realistically?
In fact, realistic income depends on how we ourselves manage the funds we trade. If it is for full time it is more precisely to invest. Realistic results are sometimes not as expected, but by the way we manage it well, we can make a profit. By paying attention, the news that is happening or from the market place with all the risks.
Examples like this,
you have $ 100 and you want to spend it all to buy bitcoin, so when the current bitcoin price rises 50%, you will get bitcoin for 0.0030 BTC or the same as $ 150, here you have made a profit, but you know that the price will go down the following week. It all goes back to your choice, holding it to wait for the price to rise again, or selling it as a whole, or selling it 75% of the total raised and holding the rest to be used as the next asset. Here you can also buy bitcoins in smaller amounts according to your needs.