I just got myself a camper shell for my truck. I am going to build or buy a roof rack to haul cargo items such as camping items (tents,chairs,sleeping bags,etc.). my camper shell does not have any type of track rails on top for racks of some sort. what would be a better mounting idea for my rack gutter mounts or track railes? would one be stronger or safer than the other? input and pictures are always welcomed and appreciated.