I use about a ten foot piece of black colored 7/16 static climbing line for a 3 point lineman belt. Sometimes (when I hunt from bow hunter harness instead of aero hunter) I use the lineman belt as my bridge and my tree strap.
They're easy enough to make:
You'll need the rope, some prussic cord (I use 6-7 mms accessory cord) , and however many carabiners as you want connection points (3 for the three point lineman belt/bridge/tree strap)
Tie a figure eight or figure eight follow through on each end of the rope. (Attach carabiners to each end or to one end and put a stopper knot on the ends)
Tie a prussic on the rope and put a carabiner on it (in the middle, and another on the end of the rope if you didn't put carabiner on that end)
Hook up one side and the middle as lineman belt. Use the other end and the middle as second lineman belt if you need to go above or below a branch.
Make it as long or short as you need. Make it with as strong a rope as you like. Use it as lineman, bridge , tree strap, whatever you want.
Easy
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