Welcome, again, fish. When you have time, go over to the Introductions section and tell us about yourself. Also, it's good to put your first name and town in the signature line of your profile. We like to know who our new friends are!
As for rib racks... I don't use them. People do, and I think they're great if you're trying to smoke a crazy amount of ribs at one time. I can comfortably do 5+ racks of baby backs in the #2, laying them flat (bone-side down). That's a lot of ribs! I believe they cook best like that; if they stand on their sides, in a rack, they naturally drain. I don't want that! I want the ribs to baste in their own juices, not drain off. This is why I don't bother with rib racks. Also, it's just one more thing to clean!