I second what Mark Poulson said. I have split a lot of pieces of wood with screws, by not predrilling a hole of the correct size. Place a drill bit over the screw shank and the threads of the screw should show on each side of the drill bit, but not the shank of the screw. That way, the only pressure, trying to split the wood is the screw threads, and that should be max. holding power. Those of you, twisting wire for screws, are on your own. Mark is right in running grain front to back, but if you look at it from the front you still have grain that goes horizontally or vertically. I would run it horizontally, that way, screws will be going through more different grains of the wood. The darker wood grains hold screws better than the softer lighter grain.
Sometimes when hand sanding a tapered lure you can notice that the lighter grain will sand easier and actually create a low spot on the lure.
Ever get one lure out of a bunch of identical lures that catch more fish than some of the other lures. I believe it has to do with the wood grain of that particular piece of wood, but can't prove that.