#2 Wigglefin ActionDisc Wigglefin ActionDisc Size #2 Wigglefin ActionDisc's add the natural swimming action and vibration that has become increasingly important to catch trophy fish in heavily fished waters. They produce truly unique action in light lures or flies that normally rely on the movement of the material or skilled manipulation by the angler to bring out their best Place a small bead between the ActionDisc and your bait or fly to eliminate any abrasion of the knot For trolling ActionDisc's, we recommend using a ball-bearing swivel 36" ahead of the bait. Sizing Guide Hoochies & Squid Baits 3" - 6" Bait-Fish 3" - 6" Trolling Flies 3" - 6" Plastic Worms 6" - 10" Plastic Flukes 3" - 6" Spacing the Wigglefin Actiondisc away from the bait results in a slower action & wider swim path. Spacing the Wigglefin Actiondisc close to the bait results in a rapid action & tight swim path.