I just finished up after fifteen years as a Professional Trapper in the Riverina NSW, the last ten years of which I utilised a Leupold 24x BRD that Premier Reticles tweaked for me.....prior to that I used an old 24x Leupold and a couple of 6.5-20's (did not like them though). The spotlight I used was a Black Night-eater....sold in January to a young fellow in Deniliquen NSW.
All of the blokes around here that are still in the game use at a minimum 18x to a maximium of 24x......the country about here is mostly plains or open country.......were I to shoot scrub under a spotlight I would very quickly drop to 12x.