The garden stuff and cove molding both suck and fall off/sag....been there, done that. The best option I'd found when getting mine through inspection was conveyor belt material (pretty sure TSC carries it). Drilled/tapped underside of tube on tube fender and it bolts in place. Fabbed a quick metal bracket in the front to hold a side marker and add additional support to the front of the 'flare' and was good to go. Inspector was actually impressed.
**WARNING** This image is about 10 years old and the last time Ian's jeep moved without assistance from a trailer. That inspector is probably retired.