I have been thinking about getting a monopod to use for those marginal times when I don't want to carry a tripod. A monopod seems like it would be very useful...you see all the sports photographers using them. I know it won't replace my tripod for long exposures but what about when you are in the woods and you want to use a larger aperture or the lighting conditions are a stop or two less than what you feel good about unsupported. I know I could try to find a tree or a rock or fence etc. but most of the time those methods change the perspective. Do you think monopods are useful?