Further to Beech me Up's excellent post.
Aerotropics C/P is Ian Cooper
He is a very hard man to see as he's very busy and I understand they prefer people to apply through their web site.
www.aero-tropics.com.au
Added to there fleet they also have a couple/few AC50's (Aerocommanders/Shrikes)
Apart from Rick and Ian I don't think they base any pilots outa CS. If so not many as most of there flying is on HID.
Cape York no longer has a C206.
Also no base on HID. They do go through there from Badu Isl and have a desk in the terminal but thats is. They have recently changed hands and I THINK have been bought by a local "syndicate." Not sure who the CP is anymore.
Hinterland Aviation is owned by Trail Finders a travel agent & the C/P is Sam Sapuppo.