There are a lot of kayak and canoe rentals on the region, typically associated with good places to go. I'm not going to try to list them, you can search them out yourself.
There are many kinds of wild ducks, and even more types of domesticated ducks, but the Mallard is a good representative of all. Ducks are harmless. Bring some bread along, I never met a duck that didn't expect to be fed.