The HSTRU has a nice thick aluminum bumper on the back with the integrated drop down landing leg that would hold a tire carrier fairly easily... I thought about coming up with some sort of swing down tire carrier on the back but it would need to swing down to the ground since the rear door on the HSTRU opens down and out. I have read a few posts from folks with 1101s that just use a piece of angle under the bed with a bolt or two holding up a spare out of the way and thought I may try something like that.
Yes on the S250 pulled by the JK. The surface area is too much for the Jeep IMHO. And I can speak from experience
Pics are from trip in 2013 up on the rim in AZ (who says AZ is all desert!)
3000lb travel trailer with weight distro hitch and axle flip and bigger tires on the trailer. It worked ok but with all that front surface area your fighting headwinds. I didn't like it but it is doable. Penistar engine pulled the snot out of it just fine and I had the OME HEAVY rear springs on the Jeep. I still have the trailer but don't pull it with Jeeps anymore. Should just sell it (If anyone is interested in a gently used Nomad 140 travel trailer with axle flip and nice Yokohama AT tires PM ME
Incidentally, this trailer led me to decide on building the HSTRU for off-road fun.
The 1102 with the S250 on it is the same height as this travel trailer with the smaller 265/75R16 tires on the 1102 so wind resistance is close to the same if not a tad worse.
Another side note on this setup, I had too much tongue weight on the hitch so had to move propane tank to inside during transport and other issues. Just not a lot of margin on this kind of setup with a JK. I made 3 or 4 camping runs with this setup but opted for safety and wear and tear on the Jeep (even thought I traded it in already).
What time of year are you thinking for Big Bend?