Sailing from VYC, Duncan Hamilton competes in the Western Cape dinghy circuit. Since October 2025, 1 races across 1 regattas have been recorded for Duncan. Duncan's primary class has been Dart 18, with additional appearances in other fleets. Highlights include winning the SailingSA events in the multiple fleets fleet, along with the SailingSA events in the multiple fleets fleet. Duncan continues to compete regularly across provincial and national sailing events.