My sister is a travel agent, and she recommended Travel Guard trip insurance to me. We have purchased insurane policies for two trips from them. Luckily we did not have to file a claim!
http://www.travelguard.com/

On the west side of Maui, our favorite snorkeling spots were Honolua Bay, Black Rock at Kaanapali beach, and Kapalua Bay. Here is a link to a pretty good site describing the best shore diving and snorkeling spots on Maui. Regarding Mile Marker 14, the spot is technically named Olowalu, and we stayed...