I also assumed you are in the southern hemisphere, since you called them Yakkas. I heard that on RokkitKits YT hahaha. Yakkas and slimeys. Is a yakka like a jack mackerel?
I think you get a little longer life out of a higher grade sibiki. But in terms of getting bit pretty much any kind will work well here in socal. Baiting them up with squid or fish skin will definitely increase the bites.
You using the yakkas to catch KINGIES?