If there were any reliable way to do this, people who knew the trick would be doing it, not talking about it. As soon as the opportunity became common knowledge, it would be flooded, and the margin would disappear.
In the investment world, anything close to 10% return is usually highly risky, speculative.
So it's downright unattainable, since the vast majority of the population which invests money gets returns that are 20x lower in a good year.