The pilot of the experimental weight-shift-control aircraft was performing a takeoff from runway 18 when the accident occurred. The pilot stated that during initial climb, about 10-12 feet above the ground, the aircraft began to descend and drift off of the runway centerline. The pilot was not able to correct for the descent and lateral drift before the aircraft landed hard on its rear landing gear. The right wing tip impacted the terrain as the aircraft bounced twice and tipped onto its side. The wing and its king post were substantially damaged during the accident. The pilot stated that there were no preimpact mechanical malfunctions or failures. According to the pilot, the local surface winds were 3-5 knots from the west-southwest. A nearby weather station reported that the surface winds were 7 knots from the northwest.