Boating out of Middle River. Normally, we pull out in September but with the 44DA we want to extend the boating season as long as possible. I know much of it will have to do with the marina schedule for hauling and blocking, but we'd like to get on the tail end of that list. What's the risk of freezing later in the season (say November)? Should I get an engine room heater? How long does the temps have to be below freezing before things become an issue? I assumed the temps would have to be below freezing for at least 8-10 hours before any risk. Is this accurate? If the temps fall below 32 degrees for an hour or so over night, is that okay or not okay? Thanks!