I took a chunk of pink fiberglass insulation and placed it around the burner area. It 'breathes' enough to keep the flame lit just fine and baffles the wind from blowing it out. I take the insulation out when I arrive at my destination, then put it back in when I drive again. Works GREAT!!
Make sure you just use the pink insulating batting, not the paper backed stuff. It's sold in rolls at any home improvement store. You'll have a lot of extra, but I use it around the camper for winterizing; places like the dump valve hatch, under the sink and outdoor shower, the roof vents, etc. Just cut the batting a little large and it will self-hold in a confined space.
