Can you put a track system or rail on top of an UnderCover?
A. Yes, you can, but there are specific ways in which it must be done or you can cause serious damage to your cover as you can see in the picture attached. Over sizing the hole for the bolts is the first opportunity for damage. If you just drill a hole the same size as the bolt, the cover is going to, in cold weather, contract around the bolt and split the cover.
