Thanks everyone for the quick replies. That's what I was guessing. Just didn't know if using it was unnecessary/overkil or not. I know what you mean about the sway so I understand why. I just hate having to stop and take off the sway control arm to back up.
And Sandia Man, I'm excited to pull with it. Had a guy who rode right next to my trailer wheels for 8.5 miles on my right and then for 2.5 miles on my left a month ago with my Yukon XL pulling it. Didn't matter if I sped up or slowed down. I couldn't shake him. The @#$%^&#$ just stayed there, going from yellow line to white line in his lane. After that, I knew I wanted a different tow vehicle.