I use a Hot Blonde with big TiTs... Keeps me warm..

Chris

Seattle boat show has shoe box sized diesel heaters for about a grand. I thought about mounting one under the dash. Don't tell CG.

Hey Rob, I'd you're at the show at all next week come find me and say hello. I'll be on the boats a float dock off and on all week at the
Northern Lights booth

webasto is the company that makes diesel heaters, they have air and water heaters. water heaters like in cars won't work, unless you have closed cooling system. the engine won't heat up unless under load. using battery for those electric heaters will kill batteries. i have found that putting those small fleece blankets underneath will keep grandkids warm. plain and simple.

+2 on the 120VAC Ceramic heater. I boat in the Mackinac Straits and it's chilly at night even in August. I added shore power to my boat and plug in the heater if needed. The ceramic style don't have any hot spots and are much safer than anything else that's portable.

If you had a fresh water cooled engine in your boat ie antifreeze, it would not be too big of a deal to run a few hoses up to the cabin and build a box around a car heater core, 12 volt fan blowing through it and it should heat up your cabin very nicely, at least while the engines are running, and for a little bit after.

Fresh water cooling does work best, but raw water cooled systems work just fine.

A Big Fat Woman and some heavy breathin audda warm it up in their..

We're going Saturday afternoon. Is Hooters gone?

As Macjazzy said, if you run hoses to the cabin, they sell a remote heater that has its own box with ducts. You could mount it under a seat & have ducts coming out somewhere. They even have extra ducts that you could run to the under dash area. I have one in my rock buggies & it works great! Only a couple hundo. Check 4WD hardware.