I have not worked with yo yo's yet but I do have a few of the clover templates to play with.

Question: Instead of attaching to a backing would you be able to attach them and fill in the spaces with yo yo's on top (like layering). It would be more stable it seems to me but it would take alot more yo yo's. Like I said, I have never worked with them but as I was reading your post that is the vision I had.

Cheri