I Believe the biggest kayak catches are taken from the big Island of Hawaii and
a few nice ones have also been taken out of Oahu. I would inquire with the kayak dealers and try to message some of the kayak anglers on FB or Instagram.
I have heard good things about Jon Jon Tabon. I believe he is still based out of Maui.
https://www.facebook.com/jonjon.tabon.9/about
Good luck, and hopefully you will share some reports....good or bad just for the record.