Just read your post, and would like to reply. I've lived and worked in the Kimberley, Arnhemland and other parts
of NT for the past 9 years as a professional fishing guide.
My advice is to get an aluminium tinny if possible because they will be curious enough to swim over and take a bite. I've retrieved plenty of crab pot floats well and truly chewed up. Secondly, during daylight hours they can appear shy or dormant, BUT that changes under the shadow of nightfall.
Breeding season, males and females can be much more aggressive.
Clean all fish
well away from the boat, before bringing them back to eat. Think carefully about scrapes and rubbish, but particularly how and where you get in and out of your tender
. Don't go off on some sunset cruise
in it... NOT UP THERE!
Secure your tender
tight alongside, any gap is a potential for and ambushed attack. I've seen it happen and its scary as hell.
Crocs study everything and can pick up on your behavioural patterns, I don't mean when you board and disembark, I mean what side of the yacht.
I don't swim up there unless up above a series of stepped waterfall, that I've checked out. Even then with big floods that are massive, crocs can end up in these places.... SO BE CAREFUL.
I keep well clear of crocs but have had them come to my boat and hassle me, so I leave. They are swift and powerful and deserve respect as you well know.
You'll be and feel safer in a tender that is bigger and safer (i.e. doesn't deflate).
There's big tides and currents, storms etc so you really want to minimise any risk of capsize
, puncture, stranding or attack.
It's a beautlful and remote
place where help can be a long time coming. So just use common sense and consider every risk and scenario cause it can happen. One trip up there I came along side some folk if they wanted to jump in my tinny and tow their's as I'd watched a 15' croc follow them for 600 m. Their outboard
pushed them along at top speed of 2 maybe 3 knots in a 2.4m inflatable
soft floor, and that croc was gaining on them with no effort at all. They told me to piss off???!!! as though they had some secret fishing hole.
One last thing, crocs like to sit under trees and in the shade of bushes so when ashore really check out the foreshore as I've seen them 100m back from the water
, resting or waiting for a roo or wallaby.
Wish you all the best