How many of us are there? Owners of Dodge based RV's?

A quick question:
I have decided to take off the rear ladder(it's damaged and rickety) and remove the cargo rail from the roof. I will just patch the holes on the back from removing the ladder, but my question is the roof. I assume I will just have some screw holes in the roof but what is the best method for patching them? I have the metal roof. Anyone ever done this before and what did you use? thanks .... A.