i tie a clouser type jig.i make the head our of stainless steel bead chain. i separate the beads in pairs using dikes,i also remove the links,as they tend to pick up grass.
for weight i use led wire from >010 to .035 dia this works great for me and does not require pouring heads.
i use to pour my heads but have moved to lead wire and no longer do so,has anyone here tried led wire.