I, too, would like a bot that generated 213% annualized compound returns.
That is to say, 213% gains from trading $2000 on JNUG/JDST is a lot more feasible than 213% gains on $75,000,000 USD worth of AMZN calls
I can buy JDST at 9am for $60 and sell at 9:45am for $60.60. On a balance of $2000, this is an easy $20 for basically no risk, imo.
Sustainable should mean that 500 readers of HN each individually managing their little $2000 nest egg ($1 million aggregate) making independent decisions should be able to collectively be sitting on $3.13 million after a year.
You don't get sustainable 213% returns without a commensurate, sustainable level of risk to go with it. But if you're able to do it sustainably with 3x ETFs, congratulations.