Over the years quite a few people have asked how the Jack Erskine leader is constructed, hopefully the posts below can assist.
(Thanks to Lindsay Dobe from Proserpine Bait and tackle who first introduced me to this setup)
Regards
Matt C
Materials
Mono Leader - I use 80lb Penn 10x or 80lb Stren
Crimps or Alum sleeves - make sure they're for mono and not wire
Halco cross lock snap - 50lb (I think)
Plastic tubing and bead - a lot of people use the beads and tubing when fishing for whiting.
Tools
try to use the proper crimpers if you can.