Mr. Heater has a new forced-air battery operated heater called Hero I was thinking about trying it in my wood drift boat for winter steelhead fishing on the Rogue River. It would go in the bow under the shelf. It is 35,000 BTU with no adjustment and don't know if it would be too hot for the passengers. Does anyone have any experience with these. I've used the radiant tank top units, but they tend to heat up my wood shelf and I don't want to drift down the river in flames. Another option might be to use the unit that has a bracket that I could set on the bottom of the deck well below the shelf and run a hose to it.