This is an opinion thread... so keep in mind this is exactly that--some opinions. Nothing more.
Keeping in mind I'm solo (not a couple) and as a 'long weekend' camper (haven't retired yet, so I haven't had a chance to do any long hauls), I can easily look ahead in various weather sites to fairly reliably predict what the weather might be like, I have different shelters.
If weather will be nice--I tend to not put up anything. I'll have a chair with an umbrella attached to the chair for shade in case I'm in a sunny spot and want shade.
If weather will just occasionally need a bit of a shelter over the hatch, then this works great:
Amazon.com: Sport-Brella Portable All-Weather and Sun Umbrella. 8-Foot Canopy. Blue.: Sports & Outdoors , the Sport-Brella. It's something I saw Jenn had and it's super convenient. When collapsed, it lays on the counter for travel. When open and a couple of bungees to attach it to the bumper and the hatch handle to stand up straight, it fits almost perfectly--there's a small gap right at the hinge on the left and right which I address with a couple small clamps and cut scraps of a cheap dollar store tablecloth . I don't know if there are any pictures of this setup so maybe it'll be hard to envision without seeing it in action.
If weather will be really stormy my current favorite is the 4-sided Clam shelter. I tried my sister's 6-sided one and it's awkward for a single person to put up--it can be done, but it's large and unwieldy IMO for a single person. If you are a couple, it might be the one you'd want. Neither the 4-sided nor the 6-sided will fit over the hatch, however. IMO either one would be for a "place to hang out, but not over the teardrop in any way".
Amazon.com: Clam Corporation 9882 Quick-Set Pavilion, 150 x 150-Inch, Brown/Beige: Garden & Outdoor . I like this shelter not only for rain/storms but also for when I want or need a 'fairly mosquito-free zone'.
Edit: Realized I linked the 6-sided one to Amazon; the one I have is the cheaper 4-sided one.
Amazon.com : Clam Corporation 9881 Quick-Set Traveler Shelter, 72 x 72-Inch, Brown/Beige : Garden & Outdoor
Other shelters I have used previously but haven't used in a year or more:
- the "Northern Breeze" shelter--but only used it a few times. It's useful if you want 95% of your entire trailer covered. But it's also a bit awkward for a single person to setup. But if you want the best of the best, it could be argued the NB setup and staked down properly and it won't go anywhere and you and your trailer will be protected from just about any weather.
- The side tent from Camp-Inn--used maybe 10 times, mostly for a place to put shoes/middle-of-the-night porta potty. But now I currently use a quick-popup type changing tent for that.
- The REI Alcove--and it was my favorite for a very long time. But now I like the convenience of the umbrella.
As a solo camper, again--quite often I'll put up nothing; or if I'm a bit distant from the campground facilities, a quick popup changing tent for any middle of the night type calls of nature. If it'll just be occasional rain I'll just use a regular hold-over-my-head umbrella and find the campground shelter (if there is one) to hang out in during inclement weather.
When I go to gatherings, what I see most teardrop people use is a 10x10 or 12x12 canopy. Just about any brand you find will be adequate for a season or three. For two people, those are fairly easy to setup and will usually provide shelter over both doors as well as over the hatch. Solo campers can put them up as well, but for me personally I haven't tried a canopy yet. For side walls you can either make your own from tarps and clamps or depending upon the manufacturer you can buy pre-made side walls, if you want them. If you need a location for a porta-potty/middle of the night type of thing, with a canopy what I've seen is adding this (or something similar, I think there are more than 1 manufacturer of this type of tent):
Amazon.com : Ozark Trail 4-Person 9' x 7' Gray Connectent for Canopy by BLOSSOMZ : Sports & Outdoors