Strip off enough coating off cable. Complete wire-line knot (same one you use for dipsys) onto a blacks release. Cover connection with electrical tape. I use a 3' section of cable below the probe down to the cannonball so when I stop the release while bringing up the rig, the cannonball stays under water lessening the chances it bounce-snaps off in waves. As others have stated you may have to bite the bullet and unspool all the wire to make sure where it enters the spool the coating is off that small section. Take the rigger down to a school playground and walk off all the wire, strip some coating off and reinstall. Your cable will want to loop off the spool causing major headaches so keep cable under tension coming off and going on. Either get someone to help you or attach end swivel to a fence or tree.