Justkev
Roos are protected and as skulls said you need culling permits as a farmer, or you need to be a pro shooter. In my experiences if the farmer asks for a favour i usually help out.
The last property i was on which was mainly wheat fields, i saw hundreds if not a thousand roos in a few days. This was most during spotlighting for pigs and rabbits and on dusk.
We shot 3 pigs for the trip and saw another 14, on every wheat field there were heaps of roos. So to me they eat more and do more damage.
Also when they are on the hop a roo can destroy a fence by getting caught up in it. You can understand a farmers frustration. Currently there are about 60 million roos different species, thats 3 times our population.
sometimes the boys get some meat for the dogs, i have tried it on occasions, but it needs careful cooking.