Richard Dennis (and the Turtles) :.

In 1984, Richard Dennis taught a Trend Following trading methodology to a group of students (neophyte non-traders) in a two-week seminar. Dennis' motivation for conducting the sessions was to settle a dispute with his friend and business partner William Eckhardt over whether trading skills could be taught. Dennis strongly believed that trading abilities could be broken down into a set of rules that could be passed on to others. Eckhardt believed trading abilities had more to do with innate instincts. Eckhardt lost the bet with Dennis.

Can the skills of a successful trader be learned? Or are they innate, some sort of sixth sense a lucky few are born with? Richard Dennis, the legendary Chicago trader, who turned a grubstake of $400 into $200 million in 18 years, has no doubt. Following an experiment with a group of would-be traders recruited from around the country, he's convinced trading can be learned. Over the past 1 1/2 years, a group of 14 traders he taught earned an average annual compound rate of return of 80%. In contrast, about 70% of all non-professional traders lose money on a yearly basis. Trading was even more teachable than I imagined, he says. In a strange sort of way, it was almost humbling. Mr. Dennis says he debated the learning vs. innate ability question with some of his associates for years. While they argued that his skills are ineffable, mystical, subjective or intuitive, he says his own answer was far simpler. The 40-year-old Mr. Dennis attributes his success to several trading methods he developed, and, perhaps more important, the discipline to follow those methods. To prove his point, Mr. Dennis decided to run a real life experiment. In late 1983 and again in 1984, he placed ads in the Wall Street Journal, Barron's and the New York Times seeking people who wanted to be trained as traders. The job required that they move to Chicago, where they would receive a small salary and a percentage of any profits while Mr. Dennis taught them his methods.
Wall Street Journal Article

Dennis nicknamed his proteges Turtles after visiting turtle farms in Singapore and deciding to develop traders like farm-grown turtles. Today, the original system has enabled Trend Followers to achieve outstanding returns with annual returns from 25% to over 100%. Using Trend Following, some traders have seen returns exceed 100% in a single month.