Mark Flack sails out of HMYC in the KwaZulu-Natal. Since January 2025, 35 races across 5 regattas have been recorded for Mark. Mark competes mainly in the Mirror fleet, alongside races in other fleets. Mark's best results include winning the 2025 Hmyc Grand Slam Multihull Final in the Mirror fleet, as well as the 2025 Hmyc Grand Slam Multihull Final in the Mirror fleet. Mark remains an active competitor in the Western Cape sailing circuit.