Guess I should do a follow up on this. Spend a great week in Oahu. Went free diving right from the hotel most mornings at sun up, (Sheridan Waikiki) really nice reef, turtles, fish, rays and, if your lucky, a monk seal or 2. Spent 2 days over on the North Shore just free diving sharks cove. Really amazing. Only downside was end of day 2 I'm coming out of a lava tube (?) and hammer my head on an overhang ledge.....6 staples later I was enjoying a great food truck meal of Loco Moco!
Big thumbs up to the Kahuku Medical Center ER, had me in and out in an hour.
Only shocking thing to me is how many people there are on the island, 25 years later. Its like NY city! North Shore drive was bumper to bumper up to Sharks Cove.