Exuma Powerboat Adventure. Leaving the hustle-bustle of Nassau behind, take a high-powered cruise to your own private island in the Exuma chain. You'll ride a powerboat to Allens Cay to feed endangered iguanas then take an exhilarating, high-speed run to your private Bahamas island, Ship Channel Cay. Book Now and Save 14% Off Exuma Powerboat Adventure.