If I'm after BIG walleye I like to use a 2/5 oz Little Cleo tipped with a couple of fatheads. If I'm fishing where the walleye only get to 6# or so, I like a Swedish Pimple, again, tipped with fatheads.
I'll change technique until I find whatthey want. It could be "pounding" the bottom, a short lift and controlled drop , a large lift (5-6 feet) and a flutter drop,or anywhere in between.