Given your restriction of ONE day of diving, I'd say go to Lanai with Hawaiian Rafting Adventures in the morning, then talk to Shaka Doug about getting some afternoon shore dives in.
Lanai is *generally* better diving than Molokini / South Maui, with far less previous-diver impact.
As far as I know, Doug is the only operator that consistently offers afternoon dives.
Lanai is *generally* better diving than Molokini / South Maui, with far less previous-diver impact.
As far as I know, Doug is the only operator that consistently offers afternoon dives.