Wakina is right, as far as the beads, the long beads are cause I'm lazy. Much easier to put on 3 total beads. I find the beads are necessary, without them I don't have much luck at all. A friend who passed away put me on the path to getting these to work, I spent a lot of years with the beads in front of the spoon, behind the spoon, no beads, added spinners etc and this is what made things happen big time. They are part of the attraction but the fish still want the spoon and get that front hook a vast majority of the time. I use wired for a bit but found it got bent and would throw off the action to where they did not work as good. So I went back to mono.
The first time I took a friend out and used these, he said "good luck with that". The first 11 of 12 fish came on the spoon harness. The next 10 or more trips out was mostly the same results. He now strictly runs these. We have converted a lot of guys out there. I don't say they are for everyone. Make a couple and try em out. If you like em great, if not, don't use em. Doesn't matter to me. I do know most times at the fish cleaning station everyone wanted to know where and how we got our fish, and so quick. Most thought we were messin with them and didn't believe us. Since I started using these, both my wife and I only use regular harnesses on bouncers down at the bottom as that is the only place we find where harnesses catch more walleye. Something to do with the action that draws em in where they can see it from a distance unlike the bottom.