When tying on the hook, Martin leaves a 1/4-inch tag end at the knot, which serves as a barb to hold the nightcrawler in place. He inserts the hook's point at the fifth ring below the crawler's head, then threads the crawler up the shank and past the eye, until it covers the knot. Finally, he pushes the point out near the worm's collar. This method cocks its head to one side, which makes it spin as it's pulled through the water. When using minnows, Martin nose-hooks them. Leeches get hooked through the sucker so that they'll remain lively.