I have used both the loop knot and also the snap. Both work extremely well. Tie a small snap on your line using a Palamar Knot. The snap makes it very easy to change lures.

To tie a loop knot thread your line through the lure one time. Pull about five inches of line and then hold both pieces of line in your left hand. Take the lure and just wrap it through the loop you formed three times. Wet it witih saliva and cinch it close to the lure.