Mate never been up past the first gorge......shame on me as i live only a few hours from them.
From what i have heard it is a fairly popular thing to do so it shouldn't be too hard of an exersize,just remember to troll a lure behind the yak!.......As for crocs.......well who wouild know really.......it's certainly not "infested' as they like to say but there is the odd salty around but you are more likely to encounter a freshie.
Dan