Hi Matt , I was told the 500,000 was the number that they wanted to Cull !
Not the Camel over all numbers !

If you made dams (or some type of water supply) ahead of the portable meat works , to draw numbers into accessible areas that vehicles could get to , I worked in shooting & retrieval of Buffalo on the plains in the old days , worked well , need a bigger truck for Camel as these can be huge & very heavy !

A Semi load of huge water tanks with troughs added at each spot a month or more a head may do it ?

Choppers would only be good for scouting ahead to look for animals , like on Tuna boats !

very few machines could lift a Bull , other than logging numbers , which cost thousands a hour to run !

Not many locals would work on this I believe !