Awesome!!! You give me inspiration.
Are all your pond plants in containers? Not sure what part of Canada you're in - what do you do to winterize your pond and plants? I live in high desert - 90s during summer days, can get down to high 30s/40s during winter days, rarely in the 20s at night, occasional light snow. I've had goldfish survive the winter with light ice on the running waterfall (before the raccoons discovered them).
I think I would need to do something like that to keep out the raccoons - straight sides with a a foot or two above the water line and the water around two feet deep.