I haven't heard of many cobbler incidents at that part of the river.
You do need to be very careful in the mandurah estuary. The baby boomer generation is their normal style nearly wiped the entire breeding population out and they thought that could be the end of them. (You know we have a pub down here called cobblers right?)
Then with the old netting restrictions had an effect, and about two years ago the population has started to explode. Don't believe me go down at night with a powerful light and a gidgy (oops was gonna leave that bit out

)...great eating fish...
But yeh, crawling with em down here and Dave's right, a cobbler sting fcks you up.
...and cauncy is right to..