The bait didn't just show up yesterday, it's been out there for a while. Yesterday, Friday, etc ...
See the last few fishing reports, the WSB/YT are still there for the taking, maybe it's just a matter of putting something in their face that stands out from the boils that they are seeing. A bigger Mac? A slow trolled Mac, higher/lower, a lowly squid in the middle of all that... I don't have the answer for you, but they are still hungry for the "right" lure/bait.
Friday, I sat in the middle of probably an acre of dines, birds diving, dolphins, etc... I had video going, and sat there for 15 minutes just enjoying the site ... but yet, onshore,there "were" fish caught.
Greg