Tim, thank you very much!
I have already flown once as a "F/O" on a Twotter with a good friend of mine that is (was) a Captain flying in Africa... I found it in many ways very similar in handling to the Casa... I would really love to fly floats anywhere but in the Maldives it is coming more and more difficult to grab a F/O place there as the operators are obliged to admit locals for those positions.
Cheers.