RE: How many of you can last all day....
I've done it only a handful of times! The the only times I have done it is when I was in my climber. Keeps me comfortable. I bring food....lots of it! Before I go out though I put all my food in zip lock bags. Nothing is noisier in the woods than a bad of doritos!!! Any candy bars...granola bars, etc...take out oif the packages and put in zip locks! Also, I bring things to read. I have also been known to take a nap! Not sure if this counts, but I may climb down for a few minutes and walk around a different area in order to scout it out. This helps shake the cobwebs out and it it's cold out helps warm you back up!
jay