We had a wonderful time, it’s pretty close to south point and green sand beach. We went to the green sand beach parking lot at 830am or so. Trucks wanted us to pay $200 and so we walked. It would be better to walk even earlier and it is nice to stay so close.
Word of caution, it is very isolated and there are no food options besides captain cook (which is like 50 minutes away on a windy road). There was a pizza and Thai restaurant 7 miles away but they close super early. Punalulu bake shop and coffee houses aren’t really good for meals. Bring groceries, at least to make breakfast.