None are difficult to tie and all can be mastered with a little practice. See the illustrations. Trolling is done to locate tuna schools in offshore waters. Casting jigs are used from anchored or drifting boats for yellowtail, bonito, barracuda and occasionally for tuna. Feather jigs, cedar plugs and Rapala-type lures all work well for tuna and albacore trolling.
Metal casting jigs are deadly for barracuda and sometimes for yellowtail and tuna.
Tady, Starman Candy Bar, and UFO brands are all effective at times. Light-weight jigs swim near the surface when retrieved and the heavier types are usually used in strong currents and for deep drops during tuna fishing. Another type of jig extremely effective for kelp bass is the plastic leadhead swim bait such as the Fishtrap, Scampi and similar lures. He wrote that men, women, children and everyone who fished tried for them and none could resist the appeal of their gameness and beauty. They inspired him to the first-ever use of a rod and reel at Catalina when he saw them being slaughtered with handlines cast from the beach at Avalon in 1886.