Good track, there is some wading through (I quote Jeff “A not too deep”) Creek. This does involve crossing Mona Vale Rd and parking can be a challenge
Map of the route “Baihai through Deep Creek”: 16,063 m, 432 m of climbing and 432 m of descent, elevation between 6 m and 149 m, time 00:30:12. It is a loop that starts and ends at -33.68546, 151.25050 (latitude, longitude).