There are two possible methods for entering wave: towing into it, and soaring into it. ## Towing Into Wave ### Around the Rotor The preferred method (for both glider and tow pilot) is to avoid the rotor entirely. This is most often possible if the launch site is at one end of the terrain system responsible for the wave. Simply tow around the rotor, and release when the wave lift is contacted. ### Through the Rotor In many cases, it is not possible to circumnavigate the rotor. Moderate to severe turbulence is typical in the rotor, and extra care must be taken to avoid an unusual attitude, abnormal tow position, or [[Slack Line]] developing; be prepared to release if any unsafe condition develops. Transition from the rotor to the wave can be monitored through variometer trends and turbulence. Ensure any non-standard [[Tow Release]] procedures have been briefed with the tow pilot prior to launch. ![[GFH rotor tow.png]] ## Soaring Into Wave ### Thermalling Into Wave If the air below the wave flow is unstable, it may be possible to thermal into the wave. As the top of the thermal becomes turbulent, fly upwind and attempt to contact the wave lift. ![[GFH thermal into wave.png]] ### Ridge Soaring Into Wave If lee waves are in phase with the terrain downwind, it may be possible to transition from ridge soaring into the wave. Climb as high as possible in the ridge lift, then fly upwind and attempt to contact the wave lift. Do **NOT** attempt to fly downwind over rising terrain, as **substantial** sink will be encountered before the wave. ![[GFH ridge into wave.png]] ### Climbing the Rotor The most challenging and hazardous method of soaring into the wave involves climbing the rotor. Tow and release upwind of the rotor, and maneuver the glider to remain in the rising portion of the rotor; this region is usually stationary with respect to the ground.