The road to Hana, and a cabin at Wai'anapanapa State Park...if you can get it.
Once you've secured and paid for the cabin (you have to do this in advance), you wait until about 1000HST to start out for Hana.
This gives all the "whizzers" (day trip drivers) plenty of time to race like lemmings to Hana.
If you head out at 1000HST, the road will be pretty much all yours and a pleasant and unhurried drive. You shouldn't be in a hurry because you'll already be in Hawai'i.
By the time you get to Hana, you'll see the whizzers racing back to Kahului...and the black sand beach at Wai'anapanapa State Park will be all yours for the rest of the day.
The cabins are not luxury hotel rooms. They are cabins. Bring a cooler with food for overnight. Or, you can stop at the Chevron station and pick up some smoked wahoo, some cheese, and some wine. The cabins bunk up to 8 people, but I have stayed there by myself as well.
In the morning, you can enjoy the beach and Hana all to yourself.
Then, around 1000HST, you head back to Kahului, Kihei, or wherever else on Maui you are going.
Now, you will see all the "whizzers" racing to Hana, and you'll be heading out with an unhurried drive.
Also, if you happen to drive the windward side by Ka'anapali, stop by Julia's Banana Bread in Kahakuloa. It's onolicious!
Or, if you take the south shore road back to Kahului (not sure if it's open again), stop in Kipihulu (about a mile from Seven Sacred Pools) for a truly organic smoothie at Laulima Organic Farm. You have to peddle the bicycle to run the blender. No carbon emissions from your smoothie unless you fart!