We always overnight it usually a minimum of 2 nights. Catch a lot of fish on the rattle reels at night and early morning hours like 2 and 3 am.
We've been out when the air temp is a minus 38 yep, MINUS 38
and it will still maintain 68 degrees in the house. Unless the propane wont vaporize which has been known to happen in those kind of temps. We wrap a heat tape around the regulator and tanks and plug it in if we know it's going to get bitterly cold like that.
We also take my Flex satellite with us and watch football or hockey games.
Nothing like sitting around in a t shirt and jeans and a pair of comfy boat shoes and drinking a cold beer ice fishing while it's winter weather outside.
It's just a great way to pass the winter months while waiting to get the mh out!