Fishingwithkids,
I also fish with my kids. This is a $60 investment I wouldn't be without.
Combo Fire/CO2/Gas detector that runs on batteries.
http://www.homedepot.com/h_d1/N-5yc1vZ1xhf/R-100003545/h_d2/ProductDisplay?langId=-1&storeId=10051&catalogId=10053It just adds piece of mind. I heat with a Big Buddy heater and I can be talking with others outside while the kids are toasty warm inside and I don't have to worry about low oxygen, Monoxide, or Propane puddles.(keep sensor close the floor, because propane leaks puddle to lowest spot) Just remember to change the batteries often or take new batteries out with you in the event it needs new ones.
This can also be plugged in for those who run a small 2000/3000 watt generator.
A bit pricey, but hey, it's for the kids. And keeps us all safer.
Let me also ADD! I take this device with me now when fishing/trolling in cold weather on my boat with full camper canvas.
I went out with my daughter one time and it was early am, early spring and it was cold out. <50 and drizzling. Had the camper canvas on and the exhaust fumes filtered back inside at trolling speeds. Called it an early morning after that.
Nasty headache after only a few minutes. Quickly took down the front section of camper canvas to create a cross breeze. I bring the sensor onboard now when fishing in cold temps and using the cover. The headache came after getting the fresh air. Monoxide poisoning will sneak up on you..It was hardly noticeable when I got it. after a few minutes, I looked at my daughter and said do you feel that, she said yah, what is it? It didn't take long.. Quickly unzipped the canvas to let in fresh air. after another few minutes of fresh air, that's when the headache came. not during the monoxide ingestion.. Nasty stuff, nasty headache. let me tell you. We weren't exposed for very long and all is/was ok, but for those who don't use a sensor on boat or shack, or even in your homes, YOU SHOULD! I now have em everywhere. People tend to think 'Oh, that'll never happen to me, I'm too smart for that. I'll pay attention" ,Yah right! I consider myself pretty aware, but after that incident, I know first hand how this can be such a silent killler. The only reason I felt this coming on, is because I knew it was possible for the exhaust back draft, so I was paying extra attention to any feeling of being light headed. Don't think it can't happen to you, cuz it CAN!
You can never be too careful.
NB