As far as I know that Beaver is the only Amphib available for lease in OZ, the owner doesn't like low hour pilots flying his plane either.
There is an Amphib 206 for sale in the aviation trader too, have you tried contacting the owner to see if you can arrange a lease agreement?
There is another 206 that's on wheels at the moment but it is an amphib, maybe the operator is willing to lease it to you, however I haven't heard to many good things from people who flew her as an amphib.
What sort of hours would you be willing to commit to? Owners usually want a minimum hour commitment on a lease agreement.
Also, the general hours that you see thrown around for insurance purposes is 50 hours plus 200 water landings.
Maybe Piano Man will part with ZDA seeing he's blasting around in a shiny van now
