Does anyone here rigorously conduct mutual fund timing ala Gil Blake in "The New Market Wizards?" Here is an excerpt: "Blake is a mutual fund timer. Generally speaking, mutual fund timers attempt to enhance the yield return on a stock or bond fund by switching into a money market fund whenever conditions are deemed unfavorable. In Blake's case, he doesn't merely switch back and forth between a single mutual fund and a money market fund but also makes the addtional decision of which sector in a group of sector funds provides the best opportunity on a given day." I would like to find out if anyone is generating an incremental return w/ this. What fund family / broker do you use and do you recommend any online references? Thanks.