For trading purposes, the weekly primary cycle is the most useful. The 3 to 6 month primary cycle is the equivalent of the intermediate trend, and generally determines which side of a market to trade. The next shorter cycle, the 4 week trading cycle, is used to establish entry and exit points in the direction of the primary trend. If the primary trend is up, troughs in the trading cycle are used for purchases. If the primary trend is down, crests in the trading cycles should be sold short. The 10 day alpha and beta cycles can be used for further fine tuning.