you might check out 'Fleming Sales' swing arm griddle mounting tables they make for mounting on the rear bumper of full-sized RV's. I am using one of theirs on the rear of my teardrop that I adapted into it's receiver hitch mount - they make two different versions of it - one with a fixed 12x24in table (which is what I am using) and their older version, which has a removable 14x21in table that you store away when not in use. Amazon carries them or you can order one directly from Fleming Sales. I like it being it gets the stove away from the back galley area - putting it angled to the side corner of my trailer thus giving me a lot more access from either side when using my stove. It also opens up my galley area for much more access getting the stove away from the galley area. I can also use it in it's stored position when traveling down the road - makes for a good food prep table when stopped along the way (keeps the food prep 'mess' outside the trailer galley when doing clean-up)
stored when traveling
extended out for using the stove (the stove's 1gal propane tank is mounted just ahead of the galley on the pass-side of the trailer - behind the trailer tire......)
here you can see it's mounted propane tank with the table parked for travel.