I've been doing it for years but I just use a large split shot and single hook. I laughed when I saw a write-up in a national magazine, may have been Bassmaster, about the new, hot technique. We had been using it for panfish for years. I have used a rig similar to what you describe for crappie and hooking live minnows thru the head and casting/retrieving like you would fish a plastic worm for bass.