Yep, 7x14. I've got the vinyl in the garage for the checkered flag layout, just can't bring myself to get to work on it.
I orginally put in the rings and figured I'd just tie the bikes down. Well, the angle caused the front wheel to slip more than I thought it would, so I installed the angle iron to keep the tire from moving. That was actually sufficient, but being a gadgetologist, I wanted the bike shoes. So, I put in the shoes and have been ecstatic with the way it worked out. I do have to use the rings and angle iron when loading anything smaller than a big-wheel 80 or 100. It works out though because I have the option to put any bike at any position.