I wonder if simple method could work with stocks. Lets assume that you find a good stock, and then use technical analysis to determine when to buy it.
For example, out of forex, futures, and stocks, right now on collective2, tonight, the best system is RT Hedge LT which is a stock based system and it beat out 2,500 systems. I know futures give you more leverage and quicker day trades. But stocks give you more time to get into the trade and get out. They are slow enough that you can work on another business rather than trade full time.