Bootcamp exercise classes can inspire and motivate participants to challenge themselves both physically and mentally. Most of these classes are similar, primarily varying in the instructor's style. They are usually held outdoors, use a variety of fitness tools, and last about an hour.
To increase chances of fitness success and decrease risks of injury, potential participants should look for classes that work on whole body strengthening, flexibility, core training, allignment, and proper technique. The use of a variety of exercise tools and methods often allow exercisers to acheive a higher level of fitness.
The best bootcamps seem to be those that offer no-nonsense, structured, and challenging classes that steer away from the intimidation and yelling type instruction. For most people, a firm, yet nurturing approach is far more positive and helpful with getting in shape. Quality exercises and varied equipment should be used, but people should keep in mind that ultimately the equipment does not make the class, the teacher does. The equipment just adds to the experience.
Some other areas to investigate are how the class is handled if more people show up than there is equipment for, or if the weather is not cooperating (perhaps it's a rainy day), and how the workout is designed to include all fitness levels.
The bottom line is for a person to do her homework before signing up for a class and then get out there and do her bodywork!