Tangles happen when loops of line are trapped by various other loops. Such loopholes are frequently comparable to slip knots, in that the knot vanishes when the caught lines are pulled out. The trick, consequently, is to examine if a loophole is a trapped one, determined with parallel lines going under a single line, and also taking out the caught loophole so the capturing lines could untangle entirely. Pull on a loop and also see where its continuation is, after that take out the continuing line to remove the trapped loop.
If you are into handline fishing -which is a quite pleasurable quest, incidentally-- chances are you've experienced tangled lines. It occurs conveniently: you lay the line on the ground, boat or pier surface, as well as when the sizes of line are disrupted, strands move right into, under or over other hairs, which, when pulled tight, could catch those disrupted lines. This results in snarled lines of loosened knots as well as loopholes.