rocker repair

Gents, This has bothered me for a couple weeks. The new rocker panels from W&N have a curved lip/ledge at the bottom. This seems to me a perfect place for mud and debris to collect, then block the drain holes and begin the rotting process... Do I cut this off? Here's a picture, please excuse...

My starting point was shiny paint and a seemingly perfect quarter panel. The cosmetic rocker cover was in excellent condition. But....there was a small fiberglass patch in front of the passenger rear wheel. Time to find out whats going on inside that rocker! I took the door off and reinforced-