I am getting ready sometime in late October/Early November to pull the boat and install some heat. We have electric but nothing for when we are tied up to docks w/o electric or exploring from here to there. One of my favorite places had me tied up for four days to a bouy. I'd like to get some feedback from first hand experience. I have previously had the Espar and found it ran great, no problems there. It has come to my attention that the Wallas though might be a better fit as it draws less electricity and can "idle" down without shutting off completely. We do like using our boat year round and would find this to be a must have. There is no such thing as "winterizing" our boat.