I knew I'd get slack for that pic but it's not a daily thing-- just a couple times a year like that, but the travel trailer does get single towed about 8x a year for camping trips with the fam.
It's got the hd tow/ payload package (11,200 pound tow rating)- 3.55 gears, 3.5 eco boost--- I've got weight distribution hitch and firetone rear load helper bags with about 12 pounds in them--- but you got to load the trailer right-- gotta watch your tongue weight ratio. Still way under the weight limit for comercial-- can't tow doubles in all states with a regular dl so know your laws. If you look at the pic-- you'll notice that both trailers are pretty much level, and so is the truck-- that's how a rig should sit when you have the right weight distribution and hitch heights.
As far as weight, the trailer max weight cap is 6800 (5800 dry)-- and the atv and little trailer are under 1000-- so even maxed out I'm at 7800 in trailer weight with a max tow cap of 11,200 (70 % of max rating)--- I wouldn't go much heavier though....it has plenty of power still- doesn't even seem to struggle at even 9000' climbing hills. Trailer has elect brakes so stopping isn't an issue either as long as ypu leave proper following distances ( like any good driver should do). Only time I run into problems is heavy side winds
if you know your weights, limitations, capacities, and how to load a trailer for proper tongue weight- it's doable ( but then again I've held a cdl and drove big trucks since 1995 so I'm not really a weekend warrior either)
I wouldn't suggest the combo for most drivers, that's for sure.
At one point in time, I had a 4dr long bed dually diesel with a 42 foot goose neck, and also a 24' boat --- you should have seen the length of that rig--- was still loaded correct but man was she long..
Only stop at truck stops for fuel and food
Besides-- dont yall know the ecoboost is even better than the Creedmoor !!!???