When I trapped, poaching was rife and competition for easy country fierce. I usually went the 'official' way and applied to our department of conservation for a permitted area of several hundred hectares in the middle of no where. This 'officially' gave me an area to trap in and providing I followed some simple rules I was mostly welcomed. I say mostly because the trapper was seen by the department as something akin to a farmer. I alluded to the point in my previous post where I would go to an area a few years after trapping and get bigger glossier jacko's. This was standard practice, to kill to a certain level such that on return to the area, the return on your time was bigger through bigger jacko. This was considered by some as 'farming' and not eradication or control by the department.
The further towards a town you got the more hassles you had. Sometimes approaching a land owner for private access to trap behind his farm yielded handy exclusive money. If you went to a road end and trapped from there one expected issues. From other trappers but also dope growers and other forest users. I had a few such hassles. I soon learnt the weed boys didn't like walking too far. If I walked or flew beyond that 'line' I was left to my own space.

