Origo Heater
Well, I've gotta admit, Brian's device has my top vote... although I've found it's not the total answer to having a warm cabin in the morning...I've got one of the Origo portable heater models -- uses the same wick as the Origo stoves, heated my C25 beautifully (haven't tried it on the C30 yet), burned for 6-7 hours on a full wick. You have to be careful to adequately ventilate the cabin to avoid O2 depletion, but that's true of any heater.I've read that you can obtain fair results by heating two inverted stoneware flowerpots on top of the stove in the galley.I've also seen a portable unit at Camper's World that runs on one of the small propane tanks -- like the ones that fuel our barbeques on the stern rail -- again, runs 6-8 hours. But have no experience with them.Looking forward to other responses.Mike TurnerS/V AmityLong Beach, CA