I also bought the 268RKS that I will be picking up in 4 weeks. Will be towing it back (about 3 hours drive) with my (new to me ) 2010 F150 w/tow pkg 3.73 gears and a 5.4. I recently bought the equal-izer 4 point w/d hitch that I hope will do the job.
I will report back on how it tows once I get home from this trip. Obviously, traffic, trucks and weather/road conditions will all affect the drive, so ultimately I may not be able to pass judgement for several trips.
2015 Forest River Vibe 268RKS being pulled by a 2010 F150 Lariat 5.4l, 3.73 axle Super Cab, Max Tow with 11,300 lb tow capacity , Equalizer 4 point W/D hitch