Does anyone know if any of the gassification units have multiple outlets so that you can run a line to a hot tub? Is anyone doing this or do you just treat it like another zone and have a separate thermostat etc? Just thinking my family might like it and I wouldn't feel like it was too much of an excess if I used wood to heat the water. Another question, has anyone seen a direct wood fired hot tub? I know that they make some but usually you have to buy a smaller old fashioned swedish tub with a separate wood fire water "boiler". Just wondering if any manufacturer has updated/improved these old types?