Atvalaska: Go snorkeling one day instead of "pig Hunting". And be sure to go to Hanauma Bay for that!
I spend a day there every time I go to Hawaii.
They are closed one day a week nowadays - I think that closed day is Thursdays.
DO NOT forget the sunscreen as you are snorkeling as the first couple inches of water actually intensifies the suns harmful rays, that cause sunburn.
Enjoy.
Hold into the wind
VarmintGuy