Hey I asked this on another site, I am not seeing why not use a jig head like this, instead of pegging a bullet weight against the worm when t rigging.?
Another question related to plastic worm rigs is why use an off set worm hook versus a swimbait hook or a weighted swimbait hook? Swimbait hooks come in small to huge sizes, are easy to rig and the bullet weight never comes in contact with the plastic.
As you said, it's not an option for a 10" worm or large diameter bait, even though weedless. The jig in the picture I would only use for slider grubs and small 4" or less diameter worms.