Oahu Kayaking Locations
Kailua Bay
rent from beach concession, rent "to go" from outfitter (soft rack provided)
Shoreline
river
can paddle to an offshore islet
(Kailua and Kaneohe Bays, Waikiki, Waimea Valley, Waimea Bay, Kualoa Beach Park, Kahana Bay, Kahana Stream, Waimanalo Beach Park)

Oahu has a great bus system! Depending on where you plan to go, you might not even need to rent a car.