Living in the Pacific NW rain is an issue... I have found a 13' Scamp [ actually 10' inside the trailer] all fiberglass trailer is just the ticket.... it needs no drying out before putting away after a wet hunt, only weighs 850#, has refergirator, stove, 20 gal fresh water tank, and has plenty of room for 2 guys and gear. Mine has bunks in front [ back of couch actually folds up to make the top bed]. This is a great place for bows and gear. The dinette is the bed I usually choose as it's a bit bigger than a bunk.. I usually use this for up to a week at a time. I, like others here, heat it with a Mr. Buddy heater... but I use a 5 gal tank. It seems to last forever. I do crack both a window and the top vent a bit at night for safety's sake. I actually scored this trailer for $500 several years ago and can't remember how many have tried to get it off of me for up to 3x or better what I gave for it... They are available with some searching
For longer, colder trips the 26' Old Winnebago gets the call....got to love that furnace, micro-range, generator and dvd player during late archery elk hunts. I usually leave it set up as a camp for the entire late season. With 5 seperate beds, there is room for all ...but does get a bit crowded if over three guys are using it for extended periods of time.
I also have a Army Squad tent with an arctic liner, but either of campers will beat it hands down for comfort. Plus, I don't have to dry it out when the hunt is over.. before storing it away.
Gene