If someone has there heart truly set on floats then the best thing to do is make yourself known to the Cheif Pilots with the larger companies PERSONALLY.
Introduce yourself, show you are keen, build up relationships. Floats in Australia is very much a niche industry with very little movement so make yourself known.
It may seem a little strange to recommend getting the endo with very few jobs around, however it will teach you some fantastic stick and rudder skills, and a great respect of what your aircraft can (and can't) do!