Question SPL - Sailplane Pilot License - Operational Procedures

During a winch launch, after reaching full climb attitude, the airspeed indicator fails. What action should be taken by the glider pilot? - SPL

Continue launch to normal altitude, use horizontal image and airstream noise to conduct flight as planned

Try to re-establish airspeed indication by abrupt changes of speed during launch

Push elevator, decouple cable and perform short pattern with minimum speed

Continue launch to normal altitude, use horizontal image and airstream noise for pattern and landing right away