I took a look at the MORryde Inflatable Rear Patio Tent for Toy Haulers # MR54KR that you mention, and unfortunately it appears that this has been discontinued, however I do have another potential option.
You may consider taking a look at the ArcHaus Camping Tent and Clip-On Interior Screen Room # SAR024-031.
This tent is a bit smaller than the MORryde patio tent, however the outcome is relatively similar. Although this tent is designed to be used with an SUV, however this may work out... view full answer...
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