Hi again

I've done some more digging around for you and found what I wanted. If I go again I will take one of these



This can get clamped to the roll bar and then moved left or right to suit you needs. Depending on the size of your centre pole will obviously determine how high or low you can go (please note that they don't encourage you to stand in these trucks as you break the line of the vehicle and become more obvious to nature). I was very envious of the birdwatcher who had one of these. Stick a nice wimberley head on the top and you are away. Funnily enough I found it at this site

Clamp website

which is for binoculars. Those birdwatchers get all the right toys!

There was also a film crew in Mashatu whilst I was there and they had everything setup on tripods but to be honest they seemed to get in each others way as you could really only operate one per vehicle easily. If I had space I would possibly consider taking a carbon monopod but I'm usually way over my limit anyway.

I hope this helps