i bumped into jim shelley on my syndicate lake at the end of the season and asked him to show me how he ties his chods,it was as follows.6-8ft of leadcore(i use 6ft),bottom bead 1ft from the lead/top bead 6"-1ft from the top of leadcore,smallest ring swivels you can get your hands on,4mm rig ring on the D rig,25lb korda mouth trap,hook length between 2.5 and 3 inches,hooks esp stiff riggers mk2,atomic chodda.ive now been tying it this way since and my catch rate has gone up fourfold,i use the atomic chodda's in size 6(straight point) and jrc mbt4 in size 4(beaked point).not saying this is the be all and end all but that did come from the chod father himself.good luck with which ever way you choose