Towing Around the Hills is nothing to be worried about provided you are well within weight restrictions and your vehicle is serviced and up to-date. A 2013 F150 XLT 5.0 isa tough rig and should be fine to handle it.. Dont be scared to give it a rev

 

I towed a 9000+ pound trailer for 7 years to moose camp every year through the mountains in Alaska with my 2005 F150 5.4L. It struggled at times going up some steep grades at slow speeds, even running 5000 rpm's at times. But a good trailer brake controller and weight distribution set up will take care of you no problem. My fiancee and I bought a 6500 pound 28 foot camper last spring and I towed it at least 4000 miles with the same 2005 F150 and it handled it with ease. The truck has 170k miles, never had any engine or tranny issues. With that said, we are upgrading our moose camp setup to a 15000 pound trailer, so I upgraded and bought a 17' F350 Powerstroke. But my '05 F150 is still in the yard, and still going strong.

 

We towed our 35' Winnebago TT (10,500) with our 2016 F-150 (5l V8) through that area last fall....no problems, but let the tow/haul engine breaking do the downhill work! It will slow you down without over using your breaks! Don't sweat slowing down going uphill.....that's the real world when towing! There are much more challenging hills out West and Down East !

 

My 5.4 09 F150 CCSB with tow package will haul pretty much any hill at 50-55mph at 3000rpm. I've towed all across the USA the past 3 years and never had a transmission or engine overheat. Slow and steady wins the race, why rev the hell out of it burn up fuel? At 50mph you're still passing rigs like they are standing still.