Thanks. I was just wondering as our local river is now home to some quality wipers that escaped from two reservoirs upstream. In fact, some of the finest HSB fishing is usually located at the spillways where the wipers were stocked. Knowing their wandering ways, I was just concerned about keeping them in--especially during a flood situation. Muskies are also notorious for escaping, and certain lakes have constructed barriers to keep them in. I thought maybe there was a design out there someone knew about.