Interesting thread. Just for sake of reference we
live aboard half time and keep the
boat on the Delaware. Our marina had four live a boards and a few that did it get pulled. We have a
steel hull as did two other live a boards. We did fine, even though at times it got to 1 F. For about a week or two we could walk around the
boat on the ice. We are in a
canal so we get good ice floes. Not all
fiberglass boats had bubblers, and all did fine.
We use an Espar for heat and only use
shore power to keep the
batteries up. We do have electic heat for
emergency, should the Espar fail as I did not winterize the
engine.