Just wondering if anyone knows what lip they used to rig their plugs or how folks rigged them if they just had the body? Were they weighted or not?

I have one here . It's made with a very heavy peice of wood,maple of something similar. No weight that I can see with a lip similar to the wooden Atom P-40. It came with the box,similar to the Murat lure boxes. Looks like they were sold to be self rigged unlike the Fuller popper which came rigged with cotter pins to hold the hooks in place. This one is similar to the oldest p-40's but they also made one that was with a head like the newer ones. Ron