I drew the Stallion Range on White Sands back in 2011. I had a decent hunt I guess, but not as good as I had expected. I never thought I'd hunt Africa at that time, but in the last 3 years I have gone on 6 safaris in 3 different countries taking almost 100 animals, many of them gemsbok.
I can't really speak of the off range hunts except to say that I have heard it can be a rather tough hunt taking lots of time.
I took a observer, unless something has changed they just have to go through the same background check as the hunter.