We will be in Maui next May for 6 days after having spent 6 days in Oahu. We are 2 active couples celebrating our 50th birthdays. While in Maui we plan to do some snorkeling from shore, but would also like to book a snorkel tour to Molokini or Lanai. We are experienced snorkelers and would prefer to be on a boat that isn't very crowded. We are staying at the Mahana in Kaanapali. This is our first trip to Maui and I greatly appreciate any suggestions. Thanks in advance!