Quote Originally Posted by 4x4mike View Post
I have no idea what sized nails I used. They are from Home Depot and in a bin where you buy them individually rather than in a box. These pictures will give you an idea of size. They are thick enough I don't get any deflection. The smaller nails on my cargo rack would bend if I really cranked down on them as they are smaller nails.






FWIW I have less clearance between the bottom of the rack and my roof and it's quiet. I did notice when I put the front piece on my rack I hear the wind going through that section when the sunroof is propped open. Nothing from the back section and nothing touches when the rack is loaded up.
I think I have a better idea now thanks. Pretty sure they're a smaller landscaping spike. I have an interesting idea cooking for this that should work but I have to check a couple of things first.

Will have some progress soon I hope. Haven't had time to really do much except get home, shower, play with the kiddo, and sleep.