OK... let's start over.... backing, fly line, leader, tippet, "main" fly or indicator fly, tippet, dropper. The dropper is the one at the end of the rig. If you tie a scud or small fly then a wooly as a dropper, it might appear to a fish to be a fry chasing a bug and might work well.
Rigged with the WB as the main fly and a scud as a dropper... well... It COULD work, but just doesn't look right in my head... But then that's MY head we're talkin' about...