We have been to Maui three times, both in the spring and the fall. But we just can't decide which would be better, this coming September or next March, staying two weeks. Both have pros and cons so would like to have feedback from others to help us make the choice. We are almost retirement age, active - like to hike and snorkel. Would like to see whales, which would send us there in February or March but want as little rain as possible. Thanks in advance for any opinions!