Hmmm... since you mention it, I now HAVE some hog-ring pliers (along with a box of hog-rings)! My wife took her Rodeo in for some warranty work on one of the rear back-rests, and the dealer left their pliers, rings, and a ratchet in the back. We didn't notice it for a few days.

Could be a nice little project here for me! Gotta take a look at the seats and see if it is something I even want to tackle.