Welcome Hack-In my opinion, Kona is the best(unless you get someone from Kauai to take you to one of the uninhabited islands near Niihau,which I understand only ocurrs in the summer due to high seas)-especially the further north and the further south you dive on the Kona coast-in regards to fish in general,because its less poulated in these areas and the currents run around the ends of the island and that brings in "big" pelagics looking for a meal on the reefs.The big exception is the mantas,which are easily seen off Kailua with dive operators who advertize these dives at night-though you can see mantas in the wild all over the coast,just not as easily or as likely.Now you are going to have to to do the research on which dive group, if any will take you very far south;there are a couple orgs. near Kohala region that will take you north ,though they tend not to go too far(fuel,time costs).You can shore dive those areas ,but remember what I said about the (they can be very strong) currents,and I wouldn't advise it unless you take someone with local knowledge of these waters....Peace....Saildiver.
