In September 1974 he joined Gillingham on a free transfer. He remained at Priestfield Stadium for only one season before returning to Dallas for the 1975 NASL season. He spent the 1976 season with the newly formed American Soccer League side Tacoma Tides where he served as a player and assistant coach. The Tides lasted only a single season before folding. On a minor note, Chadwick coached Bruce Arena, the future manager of the United States men's national soccer team, who was a Tides back up goalkeeper. In 1977, Chadwick returned to the NASL with the Fort Lauderdale Strikers.