I know that I am on the early edge but with these temps it's tempting and dangerous at the same time.
I do have a Kokatat dry suit, but my conflict is the still water is frozen and smaller streams or rivers if you come across a fall down tree if you can't get around it and the flow is high in the water, you could get trapped under the lay down. Spooky.
Wish that there was some still water open somewhere close to home without driving somewhere crazy.
Just thinking out loud.