There were a guy who made $2,000,000+ out if $20,000 in less than a year in 2001. Here is all information I was able to find about him: https://pastukhov.com/download/ataman.txt It's in Russian but you can use automated translation to get a grasp of his ideas. Unfortinately, he died in 2004. In short, he studied the market a lot, building quantitative models of traders' groups and their behaviour. He didn't try to predict the market but made statistically correct bets on some outcomes. For example, he knew when there are good setups for turtles. But, instead of following them he tried to imagine and calculate what will happen if they are wrong?
Wow. That brought back memories. I remember 'Ataman.' He used to post in the MyTrack forum back in the day.