Arthurson's tireless efforts as secretary of Manly-Warringah paid off big time in the 1970s as the Sea Eagles won the NSWRL premiership in 1972, 1973, 1976 and 1978 making the club the most successful of the decade. In total, during his 20 years as club secretary, Manly appeared in 8 Grand Finals for four premierships; 1968, 1970, 1972, 1973, 1976, 1978, 1982 and 1983. The club also won the Minor premiership in 1971, 1972, 1973, 1976 and 1983, the NSWRFL club championship in 1972 and 1973, the pre-season competition in 1980 and the KB Cup in 1982 and 1983. They also reached the finals series in 1966, 1968-1978 and 1981–1983.