I pulled mine off for the rock rail install. They weren't too packed with mud and lucky for me my rockers had no rust at all. The only thing they're good for is trapping dirt and rusting out your rockers so I'd trash them.
Sent from inside my 4.0.
Bear - 1999 Jeep Grand Cherokee Laredo - 250,000 Miles, BDS 2" lift, Overland rock rails, Dynomax cat back exhaust, 245/75/16 Kumho KL78's, Rebuilt 4.0 @ 244,000 miles.
Apollo - 2008 Mazdaspeed3 - Mazdaspeed CAI, Mazdaspeed CBE, Prosport boost gauge.
Velvet - 2005 Ford Focus ST - Wife's ride