when i used to fish LOZ , 17" berkley power worms , 7/0 hook on a 5/8oz. c-rig with a 1' leader of 30lb mono is all we ever threw at night in between docks along the concrete walls below condos,
yes i said a 17" worm, lol, almost 20"
color of the worm wasn't a big deal
we glued/taped 2 -12" worms together to make 1 big worm
just tear the tail off one 12" worm and attach the body of it to another whole 12" worm