Cycle Cruisin, San Diego

Normally, when you take a bicycle into the waters of Mission Bay, it sinks, but not with Cycle Cruisin. This boat-tour company combines bicycles and boats into one exciting activity. Its 25-foot custom boat comes equipped with 10 pedal stations around a central bar, plus a sound system and coolers. Riders can sit around the bar and pump their legs, helping the boat coast through the bay, or relax as the motor ferries them on the journey. Meanwhile, the boat's captain keeps riders entertained with a guided tour, while those who don't want to pedal can enjoy the additional bench seating.