There was a guy a few years back that was fixing up a boat
to leave and was doing YouTube videos and he did it in Huron ( not sure where) harbor north maybe? The main issue is the actual marinas
are all closed - electric/water/pump out are off and the places are closed down( so even getting in the buildings to use the facilities would be impossible) .
Would it be possible? Sure, except for that ! I grew up in Toronto and people do it there, but there is places that are setup for it , and I haven't seen that in Lake Erie. Of course the freezing happens easier in the smaller lake , so that could also be an issue - I have seen years where docks are ripped off the finger by the ice - you might have a bubbler , but if the other dock
smashes into you , that's really not helping!