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The Double Bimini Twist

Posted on February 17 2016

How to tie the double bimini twist for backing.
Like a bimini twist, but better.. Photo: Kyle Shea.

When it comes to connecting backing to fly line via loop to loop connections, there’s no doubt that the bimini twist is one the best knots of all time. Generally considered to provide 100% line strength, the twisted construction of the bimini twist actually allows the knot to stretch slightly, thus providing a knot strength that’s far superior to most other loop knots. We’ve used it the world over, from king salmon to bonefish and tarpon, and have yet to see it fail (if tied correctly of course!).

However, while we love the bimini twist, our favorite backing knot to connect to our fly line is the double bimini twist. Same knot, just doubled over beforehand to create two loops instead of one. By creating two loops, not only is the knot tougher against abrasion, but the extra loop also helps to distribute the stress on the loop of the fly line over a greater area. This helps prolong the life of your fly line by preventing the backing from cutting into the coating of the welded loop.

When fighting big fish, the last thing you want to think about is the strength of your knots. Give the double bimini twist a try and never worry about your backing connection again! Here’s how to tie it.

How to Tie the Double Bimini Twist

How to tie the Double Bimini Twist.
Step 1: Double over a long length of backing, creating a single loop.
How to tie the Double Bimini Twist.
Step 2: Fold the loop in half to create two end loops.
How to tie the Double Bimini Twist.
Step 3: Just like with a standard bimini twist, use your hand to twist the loop 20-30 times.
How to tie the Double Bimini Twist.
Step 4: Slip the end loops over your knee to hold in place, and compress the wraps by pulling on the standing and tag ends of the backing.
How to tie the Double Bimini Twist.
Step 5: Continue to compress the wraps slowly until tight.
How to tie the Double Bimini Twist.
Step 6: While continuing to apply pressure, change the angle of the tag end as shown above to allow the tag end to spin in the direction of the end loops.
How to tie the Double Bimini Twist.
Step 7: Using your index finger, apply pressure to the wraps from the inside of the loop, while keeping the same angle of the tag end. This will cause the tag end to twist over the previous wraps in the direction of the loops in touching turns.
How to tie the Double Bimini Twist.
Step 8: Once the tag end has started to twist up the knot, continue to apply pressure with your index finger. Use your thumb and index finger of your other hand to ‘roll’ the knot to help the tag end spin all the way up the knot in touching turns.
How to tie the Double Bimini Twist.
Step 9: Continue to twist until the tag end reaches all the way to loops.
How to tie the Double Bimini Twist.
Step 10: Make a half hitch around one leg of the loops with the tag end to lock thee twists in place.
How to tie the Double Bimini Twist.
Step 11: With the tag end, tie a 4-5 turn uni-knot around both loops and tighten.
How to tie the Double Bimini Twist.
Step 12: Trim both tag ends. There should be tags hanging off both ends of the ‘twist.’
How to tie the Double Bimini Twist.
Step 13: Apply a small amount of glue to the uni-knot portion of the knot only. Make sure not to coat the ‘twist’ portion of the knot as it is the twists’ ability to stretch that gives the bimini its strength.
How to tie the double bimini twist for backing.
Step 14: Loop on to the backing end of your fly line and get to it! Notice how to double loop connection helps to distribute stress over a larger area on the welded loop.

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