Thanks for the replies and advice guys. My plan is to use rotenone to kill the fish sometime in August or September, and to begin the restocking in October (begging the question, how long is the rotenone harmful to fish?). However, there is one thing that might alter my decision. The dam is leaking rather badly...probably 2 to 4 gallons per minute. It may have been going on for years, and could continue for years more before anything drastic happens to the dam. Then again, it could blow out tomorrow. Could this alter my long-term management plans? Also, consider that my goal is to have good fishing for the next five years (it is likely that I will be transferred 4 to 6 years from now). Given this information, does this change your recommendations? I really appreciate everyone's advice and willingness to share your years of experience and knowledge.