Luxmore Jet. Luxmore Jet zips you up the Upper Waiau River, where the forest comes down to the river's edge. Once on lovely Lake Manapouri, you'll stop to experience the serene quiet. The company also pairs its jet-boat rides with flights by Wings and Water or Southern Helicopters Heli-jet. Once you reach Manapouri, you could take off on a floatplane to see Doubtful Sound or Lake Te Anau by air, or be whisked back to base by helicopter. 0800/253–826 NZ only; 03/249–6951. www.luxmorejet.com. From NZ$99 for the jet-boat to NZ$485 for the jet-boat-and-helicopter option.