Heading to Overland Expo next week and weather is showing 34 degrees at night. I have a home built trailer I’m bringing and wondering how best to heat it? Been thinking about a Mr. Buddy Heater. Figured I could turn it on before bed to heat it up inside then shut it off until morning then run it again before getting out of bed. Anyone had any issues doing this? Figured I could just leave the roof vent open for a fresh air source to keep CO from building up even though they claim they don’t build up CO. What are your thoughts?