No. Monopod reduces vertical shake, and can add 1-3 stops to your exposure. But there's still the problem of horizontal shake. If your shutter speed is longer than, say, 1/15, it is highly unlikely that the monopod will help. 6 seconds is certainly too much. Just buy a small lightweight tripod for $30. If you don't raise its center column, a light tripod is surprisingly stable as long as its not windy.