I really like camping this time of year in So Cal (lots of available sites), but didn't get the furnace option and rarely have shore power. It does get down in the 20-30s sometimes at elevation. I have been lo9oking into zero degree double wide sleeping bags. I like the Grizzly and Mammouth brands so far. Nice flannel lining and zippers on both sides. Wondering if anyone has a double bag that they particularly like. Thanks!!
On the pricier end: I really like the Nemo Jazz double. It is warm but isn’t rated for very cold. So I top it with with a lightweight synthetic blanket quilt (like the Rumpl or the Sierra Madre Duffle.)
There isn’t a lot of extra space in our 550 and these options can be easily stowed in a very small space, leaving plenty of room when one is not using the interior space for sleeping. The bigger rectangular bags are way cheaper but much bulkier.
I purchased a very inexpensive 8x10 or something rain fly for a hammock set up, and use that as a cover sheet over the bedding when we are sitting around in clothes or when the trailer is picked up for moving on. We stuff the pillows, bag top and quilt/blanket toppers under the cabinet area above the feet, spread the tarp over the exposed sheet area, and are good to go.
More unsolicited info:
But usually we just use regular sheets in the trailer. Because the mattress isn’t quite queen size, and I hate having the bottom sheet all folded up underneath, I use a couple sets of “sheet garter” clip devices under the mattress to keep the bottom sheet in tension.
It is a pain in the butt to change out the bottom sheet and especially to clip those sheet garter things in place. Similarly it is a drag to access the under mattress storage areas. I made this problem worse by adding a latex mattress topper on top of the mattress. To partially solve this access problem I have run a ratchet strap under the mattress along with a short length of rope. I can pull the hook ends out and with the length of rope run between them over the top of the trailer, I operate the ratchet to lift the mattress up and hold it in place while I access underneath it.
The mattress does sag around the strapping, and I have considered adding a piece of 1/4” plywood (maybe 24” x 48”?) underneath as a stiffener. If I did this I would likely lightly epoxy the plywood to give it some added strength.
I also use this strap, without the added rope, to hold cargo in the trailer in place while driving. I just run the strap over the stuff and tighten it down a bit. My experience and training as a truck driver is that one of the causes of rollovers is that when performing an extreme emergency maneuver, such as a swerve or braking, things can escalate out of control rapidly if/when the load shifts. So keeping loads from shifting is important for keeping control in an emergency.