05 silverado rocker panel rust

[steveo2155]

After removing running boards from silverado, discovered some rust behind them on the lower part of the rockers. For the most part the rockers are still in pretty good shape, no holes but there are a couple of small spots that the running boards were covering that look bad enough that they could be rusted through if I sanded down. Looking for some options. I will not be replacing rockers for the next couple years due to not wanting to spend the money right now and overall they are still in good shape minus the couple spots mentioned, so that is not an option at this point. Would I be better off trying to apply rust stop or bondo and make it look decent for the next couple years or I've heard of various rocker panel covers - randy redneck rockers, bushwacker covers, quick covers, etc? didn't know if one was better than the other? looking for any suggestions. 

[davester]

I think covers will make the problem worse, as they will hold water against the rocker panel for longer than when the rocker is just exposed to the air.  Maybe, when the truck is dry, spray some fluid film or something like that on the backside/underside of them?