Steve, based on your description, I would say, yes. It makes a whole lot of sense to me.
The thing is, it gets way too cold during the winter for these "tropical plants" to survive. i tried raising a whole bunch of aquatic plants in my pond and the only ones that overwintered are duckweed, and myriophyllum parrot's feather... I forget all that i tried but I'll name a few, vallisneria sp's, sagittaria, riccia, vesicularia, ....