Weather conditions were fine with a five knot wind directly down the runway. The student had previously flown gliders and had recently been introduced to ultralight flying. As his last flight had been some six weeks ago a period of dual was being conducted with an instructor. On the third landing the aircraft bounced on touch down and veered left. The student applied power for go around but overcorrected and the aircraft then veered to the right. Concerned that the aircraft would not clear trees ahead the instructor intervened to land the aircraft. A ground loop followed and the aircraft sustained damage as a result. The accident was not the subject of an on scene investigation.