Best size mackeral to use when targeting YT at La Jolla

[holden_oversoul]

Question for all the experts here... I’m new to kayak fishing in southern CA, and am still trying to get my first yellowtail (or keeper fish of any variety, actually). Have been out in La Jolla a handful of times, and so far have caught pacific mackerel that I have fly-lined and slow trolled, thus far without success. When asked, some of my boating friends have told me that the bait I have been using are too large (I’ve never caught or used a greenback under 10”, most are 12” or bigger). Is this true? Do smaller macs (like 7” or under) work better? If so, is there a way to target these smaller macs? Thus far I havent had too much trouble making bait with sabikis, but all of the macs I have caught or seen have been pretty large. Appreciate any insight...