Spreader Bars are trolling jigs meant to catch big game pelagic species of fish. They create a lot of splash and commotion on the water to lure the fish in where they see a school of squid behind the splashing. The port side directional bar has a fin build onto the bottom of the bird that acts as a rudder. It will push the bar out of the wake on the port side of your boat eliminating the need for outriggers! Every fishery is different, but in California it works best from 75-100 yards behind the boat. Trolling speed ca Store Pick-Up or Shipping by Mailbox Express For shipping prices contact Mailbox Express 714 962-7108 Ask for Mark Pauly n range from 4-8 kn.