"rmcinnis" wrote:

My thought was to pull heat off the engine much like the radiator
system in a car.

Check out http://www.heatercraft.com/

I have one of their "1H" models in my ski boat. Works great! Even in a
totally open ski boat you can get enough heat out of the vents to keep the
driver warm and toasty. The vents pull out and extend on hoses and you
will often see the observers covered in a blanket with the heater vent
tucked up underneath keeping them warm as well. I am sure that if you had
any kind of enclosure you could get enough heat to keep the cabin
reasonably warm.

Rod McInnis

Rod,

That little "1H" unit would work nicely on my boat too.
Approx how much did it cost?

Gary