Tangles happen when loopholes of line are caught by other loopholes. Such loops are typically just like slide knots, during that the knot disappears when the trapped lines are taken out. The technique, for that reason, is to examine if a loophole is a caught one, identified through parallel lines going under a single line, and drawing out the caught loop so the capturing lines could decipher completely. Draw on a loop and view where its extension is, then take out the proceeding line to remove the caught loophole.
Deciphering such tangles could be irritating, especially if you have no idea just how or have little perseverance for those points. The very easy way out is to just reduce off the tangled clutter and also reconnect the lines with each other with a blood knot. Or cut into the middle of the clutter, take out what could be reconnected as well as discard the rest. Yet you lose a length of line those means, as well as you have a knot in the line that can injure your hand when battling a lively fish.