So here are the pics. We took a 3000+ mile road trip last summer from Tennessee to Maine. I purchased the stealth for the RTT and corresponded with Paul at Gobi multiple times before making the plunge. He pointed me in the direction of using Yakima snaparounds which worked great (
Yakima Universal SnapArounds - Set of 4 at REI.com) to secure it to the rack. I think some of the RTTs mount differently but for my king size 1.6 m howling moon stargazer ( purchased from Rou who was awesome on
Bundu Gear - The finest South African Safari Equipment in the world, former African safari guide) it mounts with a rail and hex bolt setup which lended itself to the snaparounds.
Depending on how big your rtt is will determine how many crossbars to span and snaparounds to purchase. I ended up spanning 3 rack crossbars with six snaparounds but in hindsight probably could have spanned the three bars and just used four snaparounds on the end crossbars only. As you may be able to tell from the pics I mounted mine with tent rails perpendicular to the rack crossbars (in order to span the three bars) with the tent opening up to the passenger side.
My tent is high, if I remember about 12-14 in from the rack base to the top. I just barely cleared my garage when pulling out. I mounted it before our trip and drove around town to check it before the journey. As far as the mounting goes that nearly ended my marriage

. I would highly recommend setting up a pulley from the ceiling to mount this thing. The tent itself is not as heavy as you would think just very large to pick up and we used a moving blanket to slide the tent up the back of the rack onto the truck. For obvious reasons I wanted the tent mounted as flush to the rack as possible which is another reason I went with the snaparounds. The problem was miminal clearance for our hands under the gobi to screw the nuts on the bolts which was good for aerodynamics but bad for mounting. We had major issues as the bolts have to be aligned perfectly through the two end holes of the snaparounds and needless to say this was nearly impossible as we would mount one end of the tent only to have the other ends bolts come out of the snaparounds and this went on and on and on. My wifes smaller hands and wrists were the only way to set the bolts and screw the hex nuts in to place. 4-6 hours later we succeeded. I have since mounted a Racor mount in my garage which I'll post a pick of later (
http://www.amazon.com/Racor-PHL-1R-HeavyLift-4-Foot-Cable-Lifted/dp/B0009I8AO6). I have been too busy at work to go camping but judging by how crazy easy it was to remove the tent after the trip with the pulley lift I would HIGHLY recommend using a similar setup if you go the snaparounds route.
That being said I am considering buying some standard Yakima or similar crossbars with standard brackets to mount permanently to the underside of my tent just because it was such a pain in the arse to mount. Yeah that will be higher but I don't think it will matter. Then I can just hook up the Yakima mounts to the gobi side rails and go.
As you can see I have the sunroof rack insert which I put a Bigfoot storage bag full of our camping chairs packed at an angle for possible better aerodynamics which worked really well. For our next trip I will probably look into buying or making a larger fairing to cover the tent in the front.
As far as wind noise it was increased a little but not bothersome. We drove close to 4000 miles at least over 80mph for long periods. We drove through major rain storms as well and nothing moved or shifted. I am running stock limited suspension and did notice things were a little squishy as far as handling, and braking was decreased, but nothing scary. A lot of that was probably from the fact that were majorly loaded down with gear. Another thing I would recommend if you are running the stock suspension is something like a rear airlift kit to level the truck out (
Amazon.com: AIR LIFT 60809 1000 Series Rear Air Spring Kit: Automotive). I lost count of all the angry headlight flashes I got because folks thought my brights were on. I will be putting that kit in before our next journey.
The tent is totally awesome. My wife, myself, and our 1 yo son slept our first night in a huge thunderstorm and not one leak. Others at the campground on the ground were soaked with rain runoff into their tents. We felt bad for them for a second. Anywhere you go expect a lot of curious questions.
As far as tent choice from what I remember from my research there were in my opinion two categories. The higher end mucho expensive tents with Eezi-awn likely the tops and then the still good but less expensive tents, like the ARB and others. I looked at Hannibal, Eezi-awn, and howling moon because from what I remember they all used tent material similar to the Eezi awn. I liked the ARB rtt but it was not big enough for our needs. Also, the prices seem to boil down to tent material and build quality. The Eezi awn tent we wanted at the time was out of stock in the USA, so we ended up going with the howling moon. We only tested in cold weather but like I said no leaks in the rain and great breathability. The howling moon has a king size 3 in mattress. I would rate comfort at 10. We left our sheets and blankets on during the trip which was nice. So just unpacked and we were ready to go.
As the rack load goes I remember reading about higher loads around 800 or 900 static when I was researching here on the forum last year, but don't quote me.
In the future I will probably also look into putting the rtt on a trailer so we dont have to break down camp if we want to go wheelin'. Then the Gobi would get all of our gear. Hope this helps, sorry for the novel. Questions welcomed.