At 17 years of age, while competing in his first Australian Paraplegic Championship in Melbourne, Victoria, he won his first gold medal in archery, South's physiotherapy program was extended to 26 hours a week in preparation for the 1968 Tel Aviv Paralympics, his first international games competition. He achieved world championship status in the sport of archery by winning one gold and two silver medals 1968 Tel Aviv Games. During the five-day Games, that required being on the field for 45 hours, he won one gold medal in the Men's Albion Round Open Archery event with the World Paraplegic Record score of 800, a shoot of 80, 60 and 50 metes, one of three events that involved shooting 1000 arrows. He won two silver medals in the Men's FITA Round Open Archery and in Dartchery Mixed Pairs open event with Australian archer Alan Conn. He also competed in table tennis events.