The best way to get to and around Pahoa is by having your own wheels.
You can get a car at the airport upon your arrival.
We had made reservations for a small car, mainly because gas is higher on the islands.
When we went to pick it up they said they had no cars left on the lot.
Finally they gave us an upgrade of a jeep. Upgrade? I don't think so but we took it.
Fly into Hilo International Airport then rent a car and drive to Pahoa. Take Highway 11 to Keaau, turn left at Highway 130 go about ten miles and you're in Pahoa.
Many hitchike !! I've seen index finger or thumb ... AC/DC here ... Best to wear tye-dye t-shirt or headband or both and sandals and beads and shades and backpack ... and?