i used to trade on 1:100 with a 10% min exposure on forex back in 2008 and in 3 months i 7x my (89% liquidated) deposit
just took me a while to figure out the ratios
but it all depends on skimming liquidity, and i tried the same technique on Bitfinex in 2015 and got wiped out by the cryptokitties hackers induced panic attack
truth was that there was no margin or reserve ratio that worked on bitcoin at that time, i was already losing a lot, they just took the last of it
what i would say is that making money for nothing requires people to get mowed, ultimately, haircut style, from overleverage and under-reserve
these days i say, just use the damn money: ie #bitcoin
you will end up better off in the long run
all this trading is just gambling on the caprice of psychopaths with too much money and too many media companies in their pockets