The Japanese invented micro jigs, and have also developed some specific techniques for fishing them. These little lures are deadly in NZ waters, particularly on snapper. Check out this great technique instruction, it's in Japanese but has full subtitles.

English subtitles: Watch and learn the subtleties and actions, and the reasoning behind them in this instructional video. There's a lot to be applied here to slow pitch jigging for snapper and kingfish here in NZ.