this is how i set up when chunking..
mainline with a fish finder on it,tied to a barrel type swivel tied to 24-30 inch leader with a hook tied to the end of the leader. you can attach any size sinker to the fish finder.
if using live bait such as eels remove the fishfinder.
if you want to use a plug.. cut off old set up and tie on a 24-30" leader with a barrel swivel on one end and a snap swivel on the other and attach you plug to the snap swivel.
i use #50-60 lbs test mono for leader material..
the set up you have will work fine for jigs
good luck
