I used hog rings. The rings themselves are real cheap but the pliers are a bit pricey ..... around $20.00 if I remember right. You can find them at a farm & tractor store or an upholstery supply store.
CBJ # 22569
KCBS BoD Judges' Advocate
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Possibly the only judge ever to get an award from a bunch of cooks
UDS 075 UCB WSM and a bunch of other stuff.
The above post is only my opinion - mine & mine alone.