The highest interest rate in HYIPs is the most risky. This type of HYIP-projects is called - Fasty. It is characterized by very high rates and very small term of life. Week of life for fast is already good enough. Here you should use Hit-and-Run strategy. Invest for one-day, get profit and search for another project. Administrators of HYIP-projects don’t like such investors - however it is the most effective strategy. Choose this type of HYIP carefully because many administrators make "money collector", without possibility to withdraw money even from the shortest plan.