I am a firm believer in not handing stuff to people on a silver platter. Always have been...it's how you learn...
Wood is cheap. Take a piece, drill it, seal it, then take it down to the water and see first how it sits...then see how it does what you want it to do. In this case pop and throw water..Use rubber bands and weights to simulate putting a weight into the body at different places. Bring split rings, pliers and different size hooks. Be prepared to be disappointed. It probably won't do what you want the first time.
Go back and do it again
That's the fun of it.
When your satisfied with your understanding of what a pencil popper, or a big mouth popper, needlefish, or swimmer does then you'll answer every question you just asked. There isn't one just "generic" placement of hooks and weights. It's how they work in tandem with the action that plug should have.
