Most sailors are familiar with Thor Heyedrahls adventures aboard his balsa raft Kon Tiki. Some may remember the self-rescue line that they dragged behind the boat. Since the raft travelled so slowly, this last chance line gave a fit sailor a sporting chance to haul himself aboard.
About this time of year, sailors creeping southward are either accelerating their migration or looking for inexpensive ways to warm the cabin. You don't have to install an expensive, built-in heating system just to get you south of the Mason-Dixon line, but when opting for one of the less-expensive options, you do have to use commonsense.