And there is a hell of a difference between landing a van in the bush and landing it on a 2000m tar runway.
Really? Maybe on some bush strips, but the ones in the Okavango are all around 1000m by now aren't they? Anyone half competent should be able to bring a full caravan to a stop within 600m or so without really trying too hard, just watch out for elephants. In Botswana you are definitely flying in the bush, but I don't really think any of the strips there require much in the way of "bush flying" skills to get into or out of.