I think I see all the parts and placements now. I just came back from the boat. It is still on a mooring. I will locate the runners as far aft and outboard as I can to avoid a dodger. This will work well.
I have friends at Hinckley's and Morris Yacht so I should be able to get a look at a few installations. I like the pad eye in your photo, Wayne. That should make alignment easier for the backs.
Thanks again everyone. It was a great help.