Aphelio,
Knocking on doors is still the best way to get your foot in the door with most float operations. No one will start you out on a DHC-2/3 or Caravan so check out operators with C-180/185's, Super Cubs or smaller in their fleet. Even then, you may be in store for a summer (or two) on the dock with hopefully, a check out towards the end of the season and maybe flying some camp checks or overloads to satisfy insurance requirements before carrying paying customers.
It's tough but not impossible to get your foot in the door. If you're persistent and able to maintain your optimism, somebody will give you your shot. Best of luck!
