You'll want to take a visit to Sears and grab their craftsman fire hose nozzle. Best nozzle I've ever used: very durable, rubberized sides, closes by twisting in either direction, offers enough flow in one direction to do the water sheeting "dry your car with water" trick. Around $15-20 and worth every penny. You'll thank me if you purchase it.
http://www.sears.com/shc/s/p_10153_12605_07169040000P