Attaching the worm is simple. Insert the keeper into the center of the worm, then poke the end of the keeper out of the flat side, then use a pair of needle nose pliers to bend the keeper back to hold the worm on. The entire process takes about 5 seconds and the worm stays on good and tight.
http://www.kentuckylake.tv/fishing/kentucky-lake-fishing-tip-2011-05-12.htm