I double the tag end of the stinger loop back onto the shank and wrap it in before trimming and have yet to have one tied in that fashion fail. The added bonus is that it helps bulk out the body if you are looking for that as well. The 180 degree turn near the head and subsequent wrapping increases the holding power exponentially.
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I am still not a cop.

EZ Thread Yarn Balls

"I don't care how you catch them, as long as you treat them well and with respect." Lani Waller in "A Steelheader's Way."