Hypnotize them with HypoTeez. Named after the Latin name of the smelt (Hypomesus Olidus), this lovingly hand-painted little critter looks so much like a real smelt its mother couldn't tell them apart. Cast it out and it starts swimming as soon as it hits the water. And as it wiggles past those monster perch and hungry zander, fixes them with its realistic fishy eyes and outstanding swimming action, they're going to be helpless to resist.
