I'm trying to tie up a bunch of 18 lb. sevenstrand leaders for pike. I have been trying to use them mthod decribed in In-Fishermna, where you leave a 1" tag end and then pinch a forceps on and spin it around the line. Whenever I give these a good pull, the knot instantly comes undo. I've tried a few standard knots, but I always end up with the lind kinked. Any suggestions here??? I am tying to a duolock snap. Thanks