Pictures of different worm harnesses

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I make mine exactly like Wakina does. Only takes about 5 or 10 min. per rig. You can get all the stuff you need, as well as some good advice, from Janns Netcraft. They sell the wire, wire benders, beads, clevises, hooks, you name it. I don't know how far you are from their store, but it might be worth your while to pay them a visit. If you go the wire route, they sell pre-cut wire sections with an eye already twisted in one end, saves time. If you buy the wire former/twister it comes with easy to follow directions on how to make, not only harnesses, but perch rigs, spreaders, and the like.

Disclaimer: I have no affiliation, feduciary or otherwise, with Janns Netcraft

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[wakina]

I use a size 2 single the number 4 treble for the last hook on some of my snells. I also use them and with 2 single hooks both size 2. I can't see a difference between the two. They are equally effective.