Until the day prior to the accident the pilot had not flown for over three months. He was carrying out a period of touch-and-go landings. On about the third or fourth landing the aircraft was apparently caught in an area of sink at the approach end of the strip, and touched down in a flat attitude and bounced slightly. The aircraft was recovered and touched down again in a normal attitude. The pilot lowered the nosewheel onto the strip, then applied power to go-around. The aircraft was observed to become light on the mainwheels and commence a swing to the left. As the swing increased the right wingtip hit the ground and the nosegear leg broke off. The aircraft slid to a halt on the mainwheels to the left of the flight strip.