Mate i find the best way to hook em is just through the nose lightly and send it in un weighted or if the current is a lil strong then use a running 00 ball sinker this distorts the swimming of the yakka and slows him down from coming back in ..... also try find the small yakkas ... the theory bigger the bait bigger the fish doesnt apply with kings and yakkas ,,,, they tend not to each big yakkas but big slimies mo worries they love them ...
hope that helps