Nah, they're easy to catch, just lob a few empty tinnies into the water as loose feed floaters then when they come up ya throw unopened tinnies at 'em to knock 'em out.
Then ya sends ya Sheila in ta get the tinnies back. Simple!
ha ha ha best the aussies use different bait ( upside down maize, corn, bread etc)
they probably be a bit easy when they are here for the first year or so.