Re: Winter storage on Great Lakes
Here's another idea to mull over.
You mentioned that the surveyor's readings of the rudder were "relatively moist."
Water intrusion into a rudder is common, and letting it freeze over the winter won't make it any better. As it happens, it's also one repair project that can wipe out a long time during the sailing season.
If you've got a heated garage or basement, you could probably tackle this one at home over the winter. Although I've not pulled a rudder on a Sabre 32, looking at hull pictures it would seem to be a relatively easy task. Getting it off the boat while it's in the slings of the Travel Lift is way easier that having to dig a trench (which is also common) after it's been parked.
Anyway, more food for thought.