One bit of small advice to those with not so many hours... Get used to NOT getting in... In Africa and similar places you're very much your own policeman...we've all used some sort of Grandmothers let down to fields that we're familiar with...and at times know that we can probably get in on the 2nd attempt if we just get the numbers lined up a bit more accurately... and you probably will. But sometimes...just don't bother....go somewhere else and get used to the feeling that you won't ALWAYS get in...it's easier to deal with diverting if you don't turn it into an extremely rare event...