About thirty years later in 1967, the name Kittiwake was again among the Stonehaven Cup competitors. Kittiwake II, built by Jock Muir at Battery Point and sailed by son Greg, won all her heats on the Derwent to reunite the Muir family with the trophy once again. Also, earlier in 1964, Venom, built and sailed by Ross Muir with the crew of John Griggs and Adrian Gorringe, had won the coveted cup. In 1966, the National Lightweight Sharpie Championships were held at the Royal Yacht Club of Tasmania. Tasmania was represented by, Angus Campbell, Peter Clifford, Michael Cummins, Bruce Darcy, Ross and John Muir. Ross Muir sailed Venom and John Muir competed in Crusader. Greg Muir joined the class for the sailing season in Snowgoose. But the class was unpredictable in numbers, and in one year in the late sixties only three boats entered for competition; John Muir, Peter Dobson and Peter Clifford. In the mid-seventies however, the class grew in popularity and by 1977 was at its peak. Seasoned yachtsmen, such as Bruce Darcy, Bill Dobson, Stephen Boyes and John Muir, were competing with promising juniors. In Stratus (which was built by Ross Muir), John Muir, Chris Fuglsang and Bob Lange sailed against Edgar Roe in Rowboat. They were neck and neck for the title up to the last race of the season, but Stratus was becalmed and Rowboat went on to take the championship. Edgar Roe later sailed with John Muir in the 1989 Jupiter's Sydney to Southport race. The Muir family have also been represented in the Diamond Class, when in 1973 Ross Muir built and successfully sailed Venom 132. She won the State Championship Pennant within 20 months of being built at Battery Point. In the 1974-75 season, she went to Perth, Western Australia, to compete in the National Class Championships hosted by the Royal Perth Yacht Club. Jock, Mollie and Ross' wife Judy made the trip for moral support. Ross went on to finish a creditabte fifth. The Muir boys, Ross, Greg and John have continued the family tradition of being competitive sailors in various classes, and this seems certain to be continued by their respective families.