I updated the ad... the cracks are not cracks, but normal craze lines you will find on anything fiberglass. they in no way have anything to do with the structure of the tent. Most people would not even notice them unless they were told they are there. I would wager you would find one on 50% of these when they are NEW. All mounts are included, and you can put up to 125 pounds on the top of it if a remember correctly.