Visual signals allow the tow pilot and the glider pilot to  communicate with each other. The signals are divided into  two types: those from the tow pilot to the glider pilot and  signals from the glider pilot to the tow pilot. These signals  are shown in  Figure 7-2 . Takeoff procedures for gliders require close coordination  between launch crewmembers, wing runners, and pilots.  Both the glider pilot and tow pilot must be familiar with the  appropriate tow procedures. The assisted takeoff includes  a wing runner that holds the wing in a level position. An  unassisted takeoff does not include a wing runner or other  ground crew. The unassisted launch requires good procedures  and should only be attempted by highly experienced glider  and tow pilots. It is recommended that all takeoffs include  a ground crewmember for traffic scanning and general  assistance during the takeoff. It is very important to never connect a glider to a towplane  or towline unless the pilot is aboard and ready for flight. If  the pilot exits the glider for any reason, the towline should  be released and disconnected because some hitches like a  Tost hitch require slight pressure for the tow ring to actually  move from the jaws. If no tension is applied, the ring stays  in place and connected when the jaws close.  Normal takeoffs are made into the wind. Prior to takeoff, the  tow pilot and glider pilot must reach an agreement on the  plan for the aerotow. The glider pilot should ensure that the  launch crewmember is aware of safety procedures concerning  the tow. Some of these items would be proper runway and  pattern clearing procedures and glider configuration checks  (spoilers closed, tailwheel dolly removed, canopy secured).  Inflight Signals Takeoff Procedures and Techniques Decrease tow airspeed Glider yaws repeatedly Towplane please turn right Glider pulls towplane tail to right Towplane please turn left Glider pulls towplane tail to left Increase tow airspeed Glider rocks wings repeatedly Glider: Release immediately Towplane rocks wings Something is wrong with glider. Close air brakes. (Towplane fans rudder.) Figure 7-2.  Inflight aerotow visual signals. 7-3