Hi I removed them fully. I figured out if you just make a hole in it (my first idea also) the mounting bracket becomes to flexible. Without the runner piece to full area of the mounting bracket lies on the body and doesn't flex.
However, as metal rubs against metal I put some Fluid Film in between to protect the area against rust.
2012 Limited V6 4x4
Tow Package, Skid Plates, Tow Hooks, Tubular Side Steps, Mud Flaps, Underbody Protection
Planned: headlight washing system, amber rear blinker, rear fog light, change amber parking lights to whites, lockpick, front camera, swap RBZ to RHW