I'm really surprised at the mamby bambys on this thread, obviously hes not looking to win a beauty contest but doesnt mean you can only drive $500 cherokee with all miss matching colored body panels, a missing door, and a bumper held on by a bungee cable. Considering your Wisconsin (I'm from MN, originally) I'm guessing these trails are narrow heavily wooded trails and muddy maybe sometimes sandy/silty surfaces with tree roots and some rocks but not just miles of rock crawling....which no one seems to be taking into account. I'm guessing most of your damage came from lack of traction from not have a rear locker and sliding into objects and 255/85/16 KM3's might have done you better than 285/75/16 K02s as someone mentioned but too late now so who cares. And the actual object that caused the damage was a tree? No? And since you said youre normally in low I imagine you are not hitting these trees at more than 15mph maybe more like 5-10? and more side-swiping/glancing them more than nailing them head on.
I dont see any reason why a steel bumper with bar work connecting to your rock sliders would not absolutely protect your lights and fenders from major damage. Yes, twigs and branches will still scratch your car, so just wax before and wet sand after. Thats not too expensive a solution for the front, for the rear you are probably in the same boat as me...saving up and waiting for the rear bumper to come so you can put on a new one. If you're wanting a dual swing-out maybe you can just buy the bumper first and the swing out stuff later?