In regards to goat control you have several options that can be completed by Central Coast Deer and Vermin Control.
Trapping by netting
Feral goats now occur across 28 per cent of Australia. In Australia, feral goats have been estimated to cause losses to livestock farming of $25 million per year, not including their impact on the environment or pasture degradation. Feral goats also negatively affect conservation values and biological diversity by damaging the vegetation and competing with native animals(https://www.pestsmart.org.au/pest-animal-species/feral-goat/).
They can be found in all states and territories and on some offshore islands, but are most common in rocky or hilly semi-arid areas of western New South Wales. There are at least 2.6 million feral goats in Australia(Managing Vertebrate Pests: Feral Goats. Australian Government Publishing Service, Canberra).