Well is one of the first persons that says his results and well into 2 years is something to show that exchange turn into a loss as well not soo easy to profit,and yes without time to make your positions is hard to profit ,looks you must look for other feature besides exchange .
I started with around 1.7 BTC in January, and by June I had about 8 BTC, 90% of which came from trading Doge:BTC pair. Since it was all manual and rather exhausting, I switched to automatic trading (and to BTC:USD pair), earned (and learned) something, and right now I'm developing two bots, one for a fiat exchange (it is already bringing in profits) and another for arbitrage on BTC exchanges (still in the works). Autotrading at one exchange hasn't been very profitable recently (not enough volatility, wtf)...
I'm aiming at 1% daily (as a minimum)
Well its an amazing result into the tradying system,making a bot sounds good let me know when some trial version ready to test.I dont know why but these month the market is hot but volatility is very low raising the risks into any coin.
About the experience taken from these last 2 years im pretty sure that even with such knowledge he owns now he can keep trading and the results can be the same as before,the market is very volatil some wins others loose .