all of the above is true, but for some reason the really big walleye seem to be like bass and like to hang out in the nasty wood on the bottom where a bottom bouncer equals a snag. i am not saying that you can not pull a fish out of there with a bouncer as it can be done. the three way is much better for dragging across a tree top than a bouncer if you see it on the graph before you go over it and then you can pull the rig over it when you feel it. with a bouncer you are then snagged.