Make sure you get photos of inside of Haleakala's crater. Colors of the sand are best in full sunlight. Also consider the "south road" to Hanna there are great photo opportunities there. Plan a whole day and make the complete trip around the island.
The road going north from Lahina gives some great overlooks of the ocean and pounding surf.
Street scenes in Lahaina are always fun. Telephoto works great there.

I have used an 18-300 on a DX camera and never had to change lens.

Whale watching is different each day, as a suggestion don't spend your whole time on the boat looking through the view finder - enjoy the sights of the whales and capture images in your mind as well as on the SD card!

Are you the original owner?

Thanks, I will look at the Tokina.

First time posting but have been reading UHH for some time. I am considering buying a Nikon AF-S DX 10X24 lens to use on my D5100 and D40. At this stage of the game I am not considering going to an FX format. I would appreciate comments from any current users of the 10X24.. I would use the lens for landscape and some indoor “real estate” type photos. I currently have the kit lens but use my 18X300mm almost all the time.