Whaaat???
From the Wilderness Air website:
"For Botswana applications the following flying experience is required:
500 hours total time with an instructors rating and instructors experience or
800 hours total time with a commercial pilots license"
Certainly not 250TT!
Moremi Air, Major Blue Air, and apparently now Mack Air have also said 500 hours minimum.
You can try with lower, but would need something exceptional on your CV to be noticed!
December to February is a myth. In that period 2013/2014 only one guy was hired. It was October/November and then April/May that most of the hiring happened in the last year or so. The timing will change every year.
A guy arrived yesterday with just over 500 hours and experience on both C206 and GA8. I guarantee that he will have a job offer (or three) by the end of the week. Lucky timing on his part- there's no other job seekers here!
And yes, immigration is still being a pain.