I can't recall which pattern I used but I went with strapless because the way the stays are constructed, the tightness of the stays and the way they sit on your hips should keep everything from moving (it does). They aren't necessary and you don't have to deal with the strap showing under the gown issue.

Duct ties for boning. I've used them on both my stays and my Mom's stays. It's comfortable, conforms to your body, can be cut to any length, and it's cheap to work with.