While it might seem tempting to copy the trader with a 300% annual return, in general these traders are taking on far too much risk and eventually will blow up. Instead look for traders who have at least 1-year trading history and a return somewhere between 10% and 30%. The trader should also be active enough that they are placing a minimum of one trade per week. This ensures that they are trying to grow their trading base rather than just locking your money in a single trade. If you want to spread out your risk you can spread out your copy trading between 2-4 different traders.