I always had the question, nibble or no nibble, does it make a difference? Then, when I started tying jigs, I try them out in my fish tank, trying to get my 8" fish to take them. Then, when I put a nibble on, I couldn't keep them off. When you "jig" the jig, the nibble "puffs" out a little puff of the scent, and it seemed to drive my fish to bite. Now, I use nibbles, just about all the time, unless the bite is really on.